Don't populate the read-only array match on the stack, instead make
it static const. Makes the object code smaller by over 310 bytes:
Before:
text data bss dec hex filename
8304 1084 128 9516 252c drivers/nfc/s3fwrn5/firmware.o
After:
text data bss dec hex filename
7894 1180 128 9202 23f2 drivers/nfc/s3fwrn5/firmware.o
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
i2c_device_id are not supposed to change at runtime. All functions
working with i2c_device_id provided by <linux/i2c.h> work with
const i2c_device_id. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch fixes some spelling typos found in Kconfig files.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This is the NFC pull requesy for 4.13. We have:
- A conversion to unified device and GPIO APIs for the
fdp, pn544, and st{21,-nci} drivers.
- A fix for NFC device IDs allocation.
- A fix for the nfcmrvl driver firmware download mechanism.
- A trf7970a DT and GPIO cleanup and clock setting fix.
- A few fixes for potential overflows in the digital and LLCP code.
-----BEGIN PGP SIGNATURE-----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=Ve8v
-----END PGP SIGNATURE-----
Merge tag 'nfc-next-4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-next
Samuel Ortiz says:
====================
NFC 4.13 pull request
This is the NFC pull requesy for 4.13. We have:
- A conversion to unified device and GPIO APIs for the
fdp, pn544, and st{21,-nci} drivers.
- A fix for NFC device IDs allocation.
- A fix for the nfcmrvl driver firmware download mechanism.
- A trf7970a DT and GPIO cleanup and clock setting fix.
- A few fixes for potential overflows in the digital and LLCP code.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
In prior commits the selected clock frequency does not propagate
correctly to what is written to the TRF7970A_MODULATOR_SYS_CLK_CTRL
register.
Signed-off-by: Geoff Lansberry <geoff@kuvee.com>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
NULL checks at line 457: if (!link0 || !link1) {, implies that both
pointers link0 and link1 might be NULL.
Function nfcsim_link_free() dereference pointers link0 and link1.
Add NULL checks before calling nfcsim_link_free() to avoid a
potential NULL pointer dereference.
Addresses-Coverity-ID: 1364857
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This reverts commit ab714817d7.
The original commit was designed to handle a bug in the trf7970a NFC
controller where an extra byte was returned in Read Multiple Blocks (RMB)
command responses. However, it has become less clear whether it is a bug
in the trf7970a or in the tag. In addition, it was assumed that the extra
byte was always returned but it turns out that is not always the case. The
result is that a byte of good data is trimmed off when the extra byte is
not present ultimately causing the neard deamon to fail the read.
Since the trf7970a driver does not have the context to know when to trim
the byte or not, remove the code from the trf7970a driver all together
(and move it up to the neard daemon). This has the added benefit of
simplifying the kernel driver and putting the extra complexity into
userspace.
CC: Rob Herring <robh@kernel.org>
CC: devicetree@vger.kernel.org
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The "or" condition (clk_freq != TRF7970A_27MHZ_CLOCK_FREQUENCY) ||
(clk_freq != TRF7970A_13MHZ_CLOCK_FREQUE) will always be true because
clk_freq cannot be equal to two different values at the same time. Use
the && operator instead of || to fix this.
Detected by CoverityScan, CID#1430468 ("Constant expression result")
Fixes: 837eb4d21e ("NFC: trf7970a: add device tree option for 27MHz clock")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Geoff Lansberry <geoff@kuvee.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since OF and ACPI case almost the same get rid of code duplication
by moving gpiod_get() calls directly to ->probe().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
In order to make GPIO ACPI library stricter prepare users of
gpiod_get_index() to correctly behave when there no mapping is
provided by firmware.
Here we add explicit mapping between _CRS GpioIo() resources and
their names used in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use unified device properties API in meaningful way.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since we got rid of platform data, the driver may use GPIO descriptor
directly.
Looking deeply to the use of the GPIO pin it looks like it should be
a GPIO based reset control rather than custom GPIO handling. But this
is out of scope of the change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
I2C and SPI frameworks followed by IRQ framework do set
interrupt polarity correctly if it's properly specified in firmware
(ACPI or DT).
Get rid of the redundant trick when requesting interrupt.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Legacy platform data must go away. We are on the safe side here since
there are no users of it in the kernel.
If anyone by any odd reason needs it the GPIO lookup tables and
built-in device properties at your service.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
In order to make GPIO ACPI library stricter prepare users of
gpiod_get_index() to correctly behave when there no mapping is
provided by firmware.
Here we add explicit mapping between _CRS GpioIo() resources and
their names used in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
It looks like there are two leftovers, at least one of which can leak
the resource (IRQ).
Convert both places to use managed variants of the functions.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
There is no platform code that uses i2c module table.
Remove it altogether and adjust ->probe() to be ->probe_new().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since OF and ACPI case almost the same get rid of code duplication
by moving gpiod_get() calls directly to ->probe().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
In order to make GPIO ACPI library stricter prepare users of
gpiod_get_index() to correctly behave when there no mapping is
provided by firmware.
Here we add explicit mapping between _CRS GpioIo() resources and
their names used in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Switch to use managed variant of acpi_dev_add_driver_gpios() to simplify
error path and fix potentially wrong assignment if ->probe() fails.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Allow gpio 0 to be used for reset signalling, and instead use negative
errnos to disable the reset functionality.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use the USB-interface rather than parent USB-device device, which is
what this driver binds to, when registering the nci device.
Note that using the right device is important when dealing with device-
managed resources as the interface can be unbound independently of the
parent device.
Also note that private device pointer had already been set by
nfcmrvl_nci_register_dev() so the redundant assignment can therefore be
removed.
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Make sure to release the device-node reference when done parsing the
node.
Fixes: e097dc624f ("NFC: nfcmrvl: add UART driver")
Cc: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The nci-device was never deregistered in the event that
fw-initialisation failed.
Fix this by moving the firmware initialisation before device
registration since the firmware work queue should be available before
registering.
Note that this depends on a recent fix that moved device-name
initialisation back to to nci_allocate_device() as the
firmware-workqueue name is now derived from the nfc-device name.
Fixes: 3194c68701 ("NFC: nfcmrvl: add firmware download support")
Cc: stable <stable@vger.kernel.org> # 4.4
Cc: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Use the nfc- rather than phy-device in firmware-management code that
needs a valid struct device.
This specifically fixes a NULL-pointer dereference in
nfcmrvl_fw_dnld_init() during registration when the underlying tty is
one end of a Unix98 pty.
Note that the driver still uses the phy device for any debugging, which
is fine for now.
Fixes: 3194c68701 ("NFC: nfcmrvl: add firmware download support")
Cc: stable <stable@vger.kernel.org> # 4.4
Cc: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This specifically fixes resource leaks in the registration error paths.
Device-managed resources is a bad fit for this driver as devices can be
registered from the n_nci line discipline. Firstly, a tty may not even
have a corresponding device (should it be part of a Unix98 pty)
something which would lead to a NULL-pointer dereference when
registering resources.
Secondly, if the tty has a class device, its lifetime exceeds that of
the line discipline, which means that resources would leak every time
the line discipline is closed (or if registration fails).
Currently, the devres interface was only being used to request a reset
gpio despite the fact that it was already explicitly freed in
nfcmrvl_nci_unregister_dev() (along with the private data), something
which also prevented the resource leak at close.
Note that the driver treats gpio number 0 as invalid despite it being
perfectly valid. This will be addressed in a follow-up patch.
Fixes: b2fe288eac ("NFC: nfcmrvl: free reset gpio")
Fixes: 4a2b947f56 ("NFC: nfcmrvl: add chip reset management")
Cc: stable <stable@vger.kernel.org> # 4.2: b2fe288eac
Cc: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Make sure to check the tty-device pointer before trying to access the
parent device to avoid dereferencing a NULL-pointer when the tty is one
end of a Unix98 pty.
Fixes: e097dc624f ("NFC: nfcmrvl: add UART driver")
Cc: stable <stable@vger.kernel.org> # 4.2
Cc: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Clean up coding style issues according to scripts/Lindent.
Some scripts/Lindent changes were reverted when it appeared
to make the code less readable or when it made the line run
over 80 characters.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The trf7970a driver uses the deprecated integer-based GPIO consumer
interface so convert it to use the new descriptor-based GPIO
consumer interface.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The 'vin-voltage-override' DT property is used by the trf7970a
driver to override the voltage presented to the driver by the
regulator subsystem. This is unnecessary as properly specifying
the regulator chain via DT properties will accomplish the same
thing. Therefore, remove support for 'vin-voltage-override'.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The last entry in the trf7970a_of_match[] table must be an empty
entry to demarcate the end of the table. Currently, there is a
comment indicating this but it is obvious so remove the comment.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The quirk indicated by the 'en2-rf-quirk' device tree property
is only relevant when there is a GPIO connected to the EN2 pin
of the trf7970a. This means we should only check for 'en2-rf-quirk'
when EN2 is specified in the 'ti,enable-gpios' property of the
device tree.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
As of commit ce69b95ca4 ("NFC: Make EN2 pin optional in the
TRF7970A driver"), only the GPIO for the 'EN' enable pin needs
to be specified in the device tree so update the comments that
says both 'EN' and 'EN2' must be specified.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
When the trf7970a part has the bug related to 'en2-rf-quirk',
the GPIO connected to the EN2 pin will not be asserted by the
driver when powering up so it shouldn't be de-asserted when
powering down.
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Joe and Bjørn suggested that it'd be nicer to not have the
cast in the fairly common case of doing
*(u8 *)skb_put(skb, 1) = c;
Add skb_put_u8() for this case, and use it across the code,
using the following spatch:
@@
expression SKB, C, S;
typedef u8;
identifier fn = {skb_put};
fresh identifier fn2 = fn ## "_u8";
@@
- *(u8 *)fn(SKB, S) = C;
+ fn2(SKB, C);
Note that due to the "S", the spatch isn't perfect, it should
have checked that S is 1, but there's also places that use a
sizeof expression like sizeof(var) or sizeof(u8) etc. Turns
out that nobody ever did something like
*(u8 *)skb_put(skb, 2) = c;
which would be wrong anyway since the second byte wouldn't be
initialized.
Suggested-by: Joe Perches <joe@perches.com>
Suggested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.
Make these functions return void * and remove all the casts across
the tree, adding a (u8 *) cast only where the unsigned char pointer
was used directly, all done with the following spatch:
@@
expression SKB, LEN;
typedef u8;
identifier fn = { skb_push, __skb_push, skb_push_rcsum };
@@
- *(fn(SKB, LEN))
+ *(u8 *)fn(SKB, LEN)
@@
expression E, SKB, LEN;
identifier fn = { skb_push, __skb_push, skb_push_rcsum };
type T;
@@
- E = ((T *)(fn(SKB, LEN)))
+ E = fn(SKB, LEN)
@@
expression SKB, LEN;
identifier fn = { skb_push, __skb_push, skb_push_rcsum };
@@
- fn(SKB, LEN)[0]
+ *(u8 *)fn(SKB, LEN)
Note that the last part there converts from push(...)[0] to the
more idiomatic *(u8 *)push(...).
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.
Make these functions return void * and remove all the casts across
the tree, adding a (u8 *) cast only where the unsigned char pointer
was used directly, all done with the following spatch:
@@
expression SKB, LEN;
typedef u8;
identifier fn = {
skb_pull,
__skb_pull,
skb_pull_inline,
__pskb_pull_tail,
__pskb_pull,
pskb_pull
};
@@
- *(fn(SKB, LEN))
+ *(u8 *)fn(SKB, LEN)
@@
expression E, SKB, LEN;
identifier fn = {
skb_pull,
__skb_pull,
skb_pull_inline,
__pskb_pull_tail,
__pskb_pull,
pskb_pull
};
type T;
@@
- E = ((T *)(fn(SKB, LEN)))
+ E = fn(SKB, LEN)
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It seems like a historic accident that these return unsigned char *,
and in many places that means casts are required, more often than not.
Make these functions (skb_put, __skb_put and pskb_put) return void *
and remove all the casts across the tree, adding a (u8 *) cast only
where the unsigned char pointer was used directly, all done with the
following spatch:
@@
expression SKB, LEN;
typedef u8;
identifier fn = { skb_put, __skb_put };
@@
- *(fn(SKB, LEN))
+ *(u8 *)fn(SKB, LEN)
@@
expression E, SKB, LEN;
identifier fn = { skb_put, __skb_put };
type T;
@@
- E = ((T *)(fn(SKB, LEN)))
+ E = fn(SKB, LEN)
which actually doesn't cover pskb_put since there are only three
users overall.
A handful of stragglers were converted manually, notably a macro in
drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many
instances in net/bluetooth/hci_sock.c. In the former file, I also
had to fix one whitespace problem spatch introduced.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A common pattern with skb_put() is to just want to memcpy()
some data into the new space, introduce skb_put_data() for
this.
An spatch similar to the one for skb_put_zero() converts many
of the places using it:
@@
identifier p, p2;
expression len, skb, data;
type t, t2;
@@
(
-p = skb_put(skb, len);
+p = skb_put_data(skb, data, len);
|
-p = (t)skb_put(skb, len);
+p = skb_put_data(skb, data, len);
)
(
p2 = (t2)p;
-memcpy(p2, data, len);
|
-memcpy(p, data, len);
)
@@
type t, t2;
identifier p, p2;
expression skb, data;
@@
t *p;
...
(
-p = skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
|
-p = (t *)skb_put(skb, sizeof(t));
+p = skb_put_data(skb, data, sizeof(t));
)
(
p2 = (t2)p;
-memcpy(p2, data, sizeof(*p));
|
-memcpy(p, data, sizeof(*p));
)
@@
expression skb, len, data;
@@
-memcpy(skb_put(skb, len), data, len);
+skb_put_data(skb, data, len);
(again, manually post-processed to retain some comments)
Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Use the recently introduced helper to replace the pattern of
skb_put() && memset(), this transformation was done with the
following spatch:
@@
identifier p;
expression len;
expression skb;
@@
-p = skb_put(skb, len);
-memset(p, 0, len);
+p = skb_put_zero(skb, len);
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
* if a local variable of type uint16_t is unaligned, your compiler is FUBAR
* the whole point of get_unaligned_... is to avoid memcpy + ..._to_cpu().
Using it *after* memcpy() (into aligned object, no less) is pointless.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The TRF7970A has configuration options for supporting hardware designs
with 1.8 Volt or 3.3 Volt IO. This commit adds a device tree option,
using a fixed regulator binding, for setting the io voltage to match
the hardware configuration. If no option is supplied it defaults to
3.3 volt configuration.
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Geoff Lansberry <geoff@kuvee.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The TRF7970A has configuration options to support hardware designs
which use a 27.12MHz clock. This commit adds a device tree option
'clock-frequency' to support configuring the this chip for default
13.56MHz clock or the optional 27.12MHz clock.
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Geoff Lansberry <geoff@kuvee.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Another place in the code that unveils non-tested at all ACPI case.
Use unified device property API in meaningful way.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since we got rid of platform data, the driver may use GPIO descriptor
directly.
Looking deeply to the use of the GPIO pin it looks like it should be
a fixed voltage regulator rather than custom GPIO handling. But this
is out of scope of the change.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
I2C framework followed by IRQ framework does set interrupt polarity
correctly if it's properly specified in firmware (ACPI or DT).
Get rid of the redundant trick when requesting interrupt.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Legacy platform data must go away. We are on the safe side here since
there are no users of it in the kernel.
If anyone by any odd reason needs it the GPIO lookup tables and
built-in device properties at your service.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
We return -ENODEV if ACPI provides a GPIO resource. Looks really wrong.
If it has even been tested?
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since OF and ACPI case almost the same get rid of code duplication
by moving gpiod_get() calls directly to ->probe().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
In order to make GPIO ACPI library stricter prepare users of
gpiod_get_index() to correctly behave when there no mapping is
provided by firmware.
Here we add explicit mapping between _CRS GpioIo() resources and
their names used in the driver.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The error handling will be neat and short when using managed resources.
Convert the driver to use devm_request_threaded_irq().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Since we got rid of platform data, the driver may use
GPIO descriptor directly.
This change fixes a potential issue of double freeing GPIOs in ACPI
case by converting to devm_gpiod_get().
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Legacy platform data must go away. We are on the safe side here since
there are no users of it in the kernel.
If anyone by any odd reason needs it the GPIO lookup tables and
built-in device properties at your service.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Sometimes during probing and registration of pn533_i2c
NULL pointer dereference happens.
Reproduced in cycle of inserting and removing pn533_i2c
and pn533 modules.
Backtrace:
[<8004205c>] (__queue_work) from [<80042324>] (queue_work_on+0x50/0x5c)
r10:acdc7c80 r9:8006b330 r8:ac0dfb40 r7:ac50c600 r6:00000004 r5:acbbee40 r4:600f0113
[<800422d4>] (queue_work_on) from [<7f7d5b6c>] (pn533_recv_frame+0x158/0x1fc [pn533])
r7:ffffff87 r6:00000000 r5:acbbee40 r4:acbbee00
[<7f7d5a14>] (pn533_recv_frame [pn533]) from [<7f7df4b8>] (pn533_i2c_irq_thread_fn+0x184/0x)
r6:acb2a000 r5:00000000 r4:acdc7b90
[<7f7df334>] (pn533_i2c_irq_thread_fn [pn533_i2c]) from [<8006b354>] (irq_thread_fn+0x24/0x)
r7:00000000 r6:accde000 r5:ac0dfb40 r4:acdc7c80
...
Seems there is some race condition due registration of
irq handler until all data stuctures that could be needed
are ready. So I re-ordered some ops. After this, problem has gone.
Changes in USB part was not tested, but it should not break
anything.
Signed-off-by: Andrey Rusalin <arusalin@dev.rtsoft.ru>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Make sure cmd is set before a frame is passed to the transport layer for
sending. In addition pn533_send_async_complete checks if cmd is set before
accessing its members.
Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at>
Rework a little bit changes in pn532_send_async_complete.
Signed-off-by: Andrey Rusalin <arusalin@dev.rtsoft.ru>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Change order of free_irq and dev unregistration.
It fixes situation when device already unregistered and
an interrupt happens and nobody can handle it.
Signed-off-by: Andrey Rusalin <arusalin@dev.rtsoft.ru>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
We are checking phy after dereferencing it. We can print the debug
information after checking it. If phy is NULL then we will get a good
stack trace to tell us that we are in this irq handler.
Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Make the EN2 pin optional. This is useful for boards,
which have this pin fix wired, for example to ground.
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guan Ben <ben.guan@cn.bosch.com>
Signed-off-by: Mark Jonas <mark.jonas@de.bosch.com>
Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
ulseep_range() uses hrtimers and provides no advantage over msleep()
for larger delays. For this large delay msleep() is preferable.
Fixes: commit 6be88670fc ("NFC: nxp-nci_i2c: Add I2C support to NXP NCI driver")
Link: http://lkml.org/lkml/2017/1/11/377
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
If all bits of 'dev_mask' are already set, there is a memory leak because
'info' should be freed before returning.
While fixing it, 'return -ENOMEM' directly if the first kzalloc fails.
This makes the code more readable.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The nci_spi_send() function calls kfree_skb(skb) on both error and
success so this extra kfree_skb() is a double free.
Fixes: caf6e49bf6 ("NFC: nfcmrvl: add spi driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
drivers/nfc/st21nfca/i2c.c does not use any miscdevice, so this patch
remove this unnecessary inclusion.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
drivers/nfc/pn544/i2c.c does not use any miscdevice, so this
patch remove this unnecessary inclusion.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
drivers/nfc/nxp-nci/i2c.c does not use any miscdevice, so this patch
remove this unnecessary inclusion.
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Directly including access_ok.h can result in the following compile errors
if an architecture such as ia64 does not support direct unaligned accesses.
include/linux/unaligned/access_ok.h:7:19: error:
redefinition of 'get_unaligned_le16'
include/linux/unaligned/le_struct.h:6:19: note:
previous definition of 'get_unaligned_le16' was here
include/linux/unaligned/access_ok.h:12:19: error:
redefinition of 'get_unaligned_le32'
include/linux/unaligned/le_struct.h:11:19: note:
previous definition of 'get_unaligned_le32' was here
Include asm/unaligned.h instead and let the architecture decide which
access functions to use.
Cc: Clément Perrochaud <clement.perrochaud@effinnov.com>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Including linux/unaligned/access_ok.h causes the allmodconfig build on
ia64 (and maybe others) to fail with the following warnings:
include/linux/unaligned/access_ok.h:7:19: error: redefinition of 'get_unaligned_le16'
include/linux/unaligned/access_ok.h:12:19: error: redefinition of 'get_unaligned_le32'
include/linux/unaligned/access_ok.h:17:19: error: redefinition of 'get_unaligned_le64'
include/linux/unaligned/access_ok.h:22:19: error: redefinition of 'get_unaligned_be16'
include/linux/unaligned/access_ok.h:27:19: error: redefinition of 'get_unaligned_be32'
include/linux/unaligned/access_ok.h:32:19: error: redefinition of 'get_unaligned_be64'
include/linux/unaligned/access_ok.h:37:20: error: redefinition of 'put_unaligned_le16'
include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_le32'
include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_le64'
include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_be16'
include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_be32'
include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_be64'
Fix these by including asm/unaligned.h instead and leave it up to the
architecture to decide how to implement unaligned accesses.
Fixes: 3194c68701 ("NFC: nfcmrvl: add firmware download support")
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Link: https://lkml.org/lkml/2016/10/22/247
Cc: Vincent Cuissard <cuissard@marvell.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Drop duplicate header gpio.h from nfcmrvl/spi.c.
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
It appears that TI WiLink devices including NFC (WL185x/WL189x) never
shipped. The only information I found were announcements in Feb
2012 about the parts. There's been no activity on this driver besided
common changes since initially added in Jan 2012. There's also no in
users that instantiate the platform device (nor DT bindings).
This is a first step in removing TI ST (shared transport) driver in
favor of extending the BT hci_ll driver to support WL183x chips.
Cc: Ilan Elias <ilane@ti.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>
Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org>
Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
If port100_send_ack() was called twice or more, it has race to hangup.
port100_send_ack() port100_send_ack()
init_completion()
[...]
dev->cmd_cancel = true
/* this removes previous from completion */
init_completion()
[...]
dev->cmd_cancel = true
wait_for_completion()
/* never be waked up */
wait_for_completion()
Like above race, this code is not assuming port100_send_ack() is
called twice or more.
To fix, this checks dev->cmd_cancel to know if prior cancel is
in-flight or not. And never be remove prior task from completion by
using reinit_completion(), so this guarantees to be waked up properly
soon or later.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
If sent packet size is wMaxPacketSize boundary, this device doesn't
answer. To fix this, we have to send zero-length packet in usb spec.
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Fix typos and add the following to the scripts/spelling.txt:
omited||omitted
omiting||omitting
Link: http://lkml.kernel.org/r/1481573103-11329-26-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Split callbacks for RX and async notification events on mei bus to
eliminate synchronization problems and to open way for RX optimizations.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
NFC version reply size checked against only header size, not against
full message size. That may lead potentially to uninitialized memory access
in version data.
That leads to warnings when version data is accessed:
drivers/misc/mei/bus-fixup.c: warning: '*((void *)&ver+11)' may be used uninitialized in this function [-Wuninitialized]: => 212:2
Reported in
Build regressions/improvements in v4.9-rc3
https://lkml.org/lkml/2016/10/30/57
Fixes: 59fcd7c63a (mei: nfc: Initial nfc implementation)
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The callback context is redunant as all the information can be
retrived from the device struture of its private data.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In order to remove rather redundant context from the callback
signature we the get nfc mei_phy from the driver's data.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace boilerplate driver registration with module_mei_cl_driver
macro in pn544 and microread devices.
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This is the first NFC pull request for 4.8. We have:
- A fairly large NFC digital stack patchset:
* RTOX fixes.
* Proper DEP RWT support.
* ACK and NACK PDUs handling fixes, in both initiator
and target modes.
* A few memory leak fixes.
- A conversion of the nfcsim driver to use the digital stack.
The driver supports the DEP protocol in both NFC-A and NFC-F.
- Error injection through debugfs for the nfcsim driver.
- Improvements to the port100 driver for the Sony USB chipset, in
particular to the command abort and cancellation code paths.
- A few minor fixes for the pn533, trf7970a and fdp drivers.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQIcBAABAgAGBQJXjp/3AAoJEIqAPN1PVmxKjpEP/2bgptSwf2cCql+Jv+YaLLny
PjKr+qBXxqvogclucaGg5iIFnVjJ/pHd+csCeqHWpT1jAK7DtK1IJZjg6K9nD7vO
OQQ49+oxcFLTTy00rbfCFzxRaDDnkhD/qafXkTomEMiH7QVK0qssaxm2FVFVEblW
1NTmcsEUnbDbccQhXnxh+N7Xt2CAgsMIbbyHM+4yQuqGtSYjFd164c3jTL13W4a5
SQEJZkCtI7DIdFd6SiXkTGNjlN/fqXuUqXsf2EHxdFb7EE0c067uHpudp2hFdAem
WmAYjjmIuTRFwRFKPJMLUakSen3XbBKVUbtDnIMYykNWYnC4CmedrCrX3YRw4GQt
hZgkj6o5IweSSf6foIgihurE6m5jqd2mAcauwYC/K9wW5nHLaKg8fd9gAngoWY7P
MKBOCyjqIPWkNDC5tne6qftpsDhCrBcdrAtbkorx0lHF20OFto7Gjzxx1Ca+fnJg
N9/fMulQJu8rz3FYpvfvogQMJjkjeFUfyZDa3/ft/ySU6qohxDwXOFaZ82lieTAo
PztTq8tY7GDrdJdyvvHx78RpRVCJT8qHzBRIiiZRpt9MM/aPSepLcozwM97WrJDa
sPvz0jol4d12VIy02j2ArPjMon1MrQePed+Y1y2OtBt8rGiSUxC94t5LE3aMqPs/
a9tNLZYL/nixpLeXbeWa
=yrVP
-----END PGP SIGNATURE-----
Merge tag 'nfc-next-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/nfc-next
Samuel Ortiz says:
====================
NFC 4.8 pull request
This is the first NFC pull request for 4.8. We have:
- A fairly large NFC digital stack patchset:
* RTOX fixes.
* Proper DEP RWT support.
* ACK and NACK PDUs handling fixes, in both initiator
and target modes.
* A few memory leak fixes.
- A conversion of the nfcsim driver to use the digital stack.
The driver supports the DEP protocol in both NFC-A and NFC-F.
- Error injection through debugfs for the nfcsim driver.
- Improvements to the port100 driver for the Sony USB chipset, in
particular to the command abort and cancellation code paths.
- A few minor fixes for the pn533, trf7970a and fdp drivers.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch allows to simulate the lost of frames exchanged between the 2
nfcsim devices through a control entry in the debugfs and is used as
follow:
echo n > /sys/kernel/debug/nfcsim/nfcX/dropframe
Where n specifies the number of frames to be dropped between 0 and 255
and nfcX is either nfc0 or nfc1, one of the two nfcsim devices.
In the following example, the next frame that should be sent by the nfc0
device will be dropped and thus not received by the nfc1 device:
echo 1 > /sys/kernel/debug/nfcsim/nfc0/dropframe
The value of 0 can be used to reset the dropframe counter.
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The idea is to have a way to control and/or modify the behavior of the
nfcsim virtual devices.
This patch creates a folder tree in the debug filesystem. The debugfs is
usually mounted into /sys/kernel/debug and the nfcsim entries are
located in DEBUGFS/nfcsim/nfcX/ where X is either 0 or 1 depending on
the device you want to address.
These folders are empty for now and control entries will be added by
upcoming commits.
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
On mips and parisc:
drivers/bluetooth/btwilink.c: In function 'ti_st_open':
drivers/bluetooth/btwilink.c:174:21: warning: overflow in implicit constant conversion [-Woverflow]
hst->reg_status = -EINPROGRESS;
drivers/nfc/nfcwilink.c: In function 'nfcwilink_open':
drivers/nfc/nfcwilink.c:396:31: warning: overflow in implicit constant conversion [-Woverflow]
drv->st_register_cb_status = -EINPROGRESS;
There are actually two issues:
1. Whether "char" is signed or unsigned depends on the architecture.
As the completion callback data is used to pass a (negative) error
code, it should always be signed.
2. EINPROGRESS is 150 on mips, 245 on parisc.
Hence -EINPROGRESS doesn't fit in a signed 8-bit number.
Change the callback status from "char" to "int" to fix these.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
The nfcsim driver now depends on the Digital layer. This patch adds the
missing dependency on NFC_DIGITAL for NFC_SIM config.
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
If a command is still being processed by the device, the switch RF off
command will be rejected. With this patch, the port100 driver calls
port100_abort_cmd() before sending the switch RF off command.
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch makes the abort_cmd function synchronous. This allows the
caller to immediately send a new command after abort_cmd() returns.
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
The USB out_urb used to send commands to the device can be submitted
through the standard command processing queue coming from the Digital
Protocol layer but it can also be submitted from port100_abort_cmd().
To not submit the URB while already active, a mutex is now used to
protect it and a cmd_cancel flag is used to not send command while
canceling the previous one.
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This patch ensures that a command is not still in process before sending
a new one to the device. This can happen when neard is in constant
polling mode: the configure_hw command can be sent when neard restarts
polling after a LLCP SYMM timeout but before the device has returned in
timeout from the last DEP frame sent.
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
With this complete rewrite, the loopback nfcsim driver now relies on the
Digital layer of the nfc stack. As with the previous version, 2 nfc
devices are declared when the driver is initialized. The driver supports
the NFC_DEP protocol in NFC-A and NFC-F technologies.
The 2 devices are using a pair of virtual links for sk_buff exchange.
The out-link of one device is the in-link of the other and conversely.
To receive data, a device calls nfcsim_link_recv_skb() on its in-link
and waits for incoming data on a wait queue. To send data, a device
calls nfcsim_link_send_skb() on its out-link which stores the passed skb
and signals its wait queue. If the peer device was in the
nfcsim_link_recv_skb() call, it will be signaled and will be able to
pass the received sk_buff up to the Digital layer.
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
When setting the driver framing as NFC_DIGITAL_FRAMING_NFCF_NFC_DEP it
used to be already configured as NFC_DIGITAL_FRAMING_NFCF which is the
same. So this entry was empty in the in_protocols table.
Now that the digital stack can handle PLS requests, it can be changed
on the fly from NFC_DIGITAL_FRAMING_NFCA_NFC_DEP.
This patch explicitly defines the framing configuration values for
NFC_DIGITAL_FRAMING_NFCF_NFC_DEP.
Signed-off-by: Thierry Escande <thierry.escande@collabora.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Colin Ian King
Arvind Yadav
Greg Kroah-Hartman
Masanari Iida
David S. Miller
Geoff Lansberry
Gustavo A. R. Silva
Mark Greer
Andy Shevchenko
yuan linyu
Johan Hovold
Johannes Berg
Al Viro
Michał Mirosław
Andrey Rusalin
Sudip Mukherjee
Guan Ben
Nicholas Mc Guire
Christophe JAILLET
Dan Carpenter
Corentin Labbe
Guenter Roeck
Tobias Klauser
Geliang Tang
Rob Herring
OGAWA Hirofumi
Masahiro Yamada
Alexander Usyskin
Tomas Winkler
Thierry Escande
Geert Uytterhoeven