WSL2-Linux-Kernel/tools/usb
Peter Senna Tschudin a2b22dddc7 tools: usb: ffs-test: Fix build on big endian systems
The tools/usb/ffs-test.c file defines cpu_to_le16/32 by using the C
library htole16/32 function calls. However, cpu_to_le16/32 are used when
initializing structures, i.e in a context where a function call is not
allowed.

It works fine on little endian systems because htole16/32 are defined by
the C library as no-ops. But on big-endian systems, they are actually
doing something, which might involve calling a function, causing build
failures, such as:

   ffs-test.c:48:25: error: initializer element is not constant
    #define cpu_to_le32(x)  htole32(x)
                            ^~~~~~~
   ffs-test.c:128:12: note: in expansion of macro ‘cpu_to_le32’
      .magic = cpu_to_le32(FUNCTIONFS_DESCRIPTORS_MAGIC_V2),
               ^~~~~~~~~~~

To solve this, we code cpu_to_le16/32 in a way that allows them to be
used when initializing structures. This fix was imported from
meta-openembedded/android-tools/fix-big-endian-build.patch written by
Thomas Petazzoni <thomas.petazzoni@free-electrons.com>.

CC: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2018-07-17 10:12:51 +03:00
..
ffs-aio-example License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
usbip usbip: usbip_detach: fix to check for invalid ports 2018-05-31 12:44:39 +02:00
.gitignore tools/usb: Add .gitignore file 2017-03-16 18:01:01 +09:00
Makefile tools: fix cross-compile var clobbering 2018-02-21 15:35:42 -08:00
ffs-test.c tools: usb: ffs-test: Fix build on big endian systems 2018-07-17 10:12:51 +03:00
hcd-tests.sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
testusb.c tools: usb: testusb: update default vary for superspeed 2017-06-02 11:22:27 +03:00