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Xiaomeng Tong c8618d6500
ASoC: rt5682: fix an incorrect NULL check on list iterator
The bug is here:
	if (!dai) {

The list iterator value 'dai' will *always* be set and non-NULL
by for_each_component_dais(), so it is incorrect to assume that
the iterator value will be NULL if the list is empty or no element
is found (In fact, it will be a bogus pointer to an invalid struct
object containing the HEAD). Otherwise it will bypass the check
'if (!dai) {' (never call dev_err() and never return -ENODEV;)
and lead to invalid memory access lately when calling
'rt5682_set_bclk1_ratio(dai, factor);'.

To fix the bug, just return rt5682_set_bclk1_ratio(dai, factor);
when found the 'dai', otherwise dev_err() and return -ENODEV;

Cc: stable@vger.kernel.org
Fixes: ebbfabc16d ("ASoC: rt5682: Add CCF usage for providing I2S clks")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@gmail.com>
Link: https://lore.kernel.org/r/20220327081002.12684-1-xiam0nd.tong@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-04-05 10:24:48 +01:00
Documentation Updates to Tracing: 2022-04-03 12:26:01 -07:00
LICENSES
arch A set of x86 fixes and updates: 2022-04-03 12:15:47 -07:00
block
certs
crypto
drivers A single revert to fix a boot regression seen when clk_put() started 2022-04-03 12:21:14 -07:00
fs Updates to Tracing: 2022-04-03 12:26:01 -07:00
include Updates to Tracing: 2022-04-03 12:26:01 -07:00
init
ipc
kernel Updates to Tracing: 2022-04-03 12:26:01 -07:00
lib
mm
net
samples
scripts
security
sound ASoC: rt5682: fix an incorrect NULL check on list iterator 2022-04-05 10:24:48 +01:00
tools A set of x86 fixes and updates: 2022-04-03 12:15:47 -07:00
usr
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Makefile Linux 5.18-rc1 2022-04-03 14:08:21 -07:00
README

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
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Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.