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Li Hua 7d06c07c67 watchdog: pcwd_usb: Fix attempting to access uninitialized memory
The stack variable msb and lsb may be used uninitialized in function
usb_pcwd_get_temperature and usb_pcwd_get_timeleft when usb card no response.

The build waring is:
drivers/watchdog/pcwd_usb.c:336:22: error: ‘lsb’ is used uninitialized in this function [-Werror=uninitialized]
  *temperature = (lsb * 9 / 5) + 32;
                  ~~~~^~~
drivers/watchdog/pcwd_usb.c:328:21: note: ‘lsb’ was declared here
  unsigned char msb, lsb;
                     ^~~
cc1: all warnings being treated as errors
scripts/Makefile.build:250: recipe for target 'drivers/watchdog/pcwd_usb.o' failed
make[3]: *** [drivers/watchdog/pcwd_usb.o] Error 1

Fixes: b7e04f8c61 ("mv watchdog tree under drivers")
Signed-off-by: Li Hua <hucool.lihua@huawei.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20221116020706.70847-1-hucool.lihua@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2023-02-18 15:11:39 +01:00
arch - Prevent the compiler from reordering accesses to debug regs which could cause 2023-02-05 11:28:42 -08:00
block block-6.2-2023-02-03 2023-02-03 11:35:42 -08:00
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Documentation dt-bindings: watchdog: qcom-wdt: merge MSM timer 2023-02-18 15:11:38 +01:00
drivers watchdog: pcwd_usb: Fix attempting to access uninitialized memory 2023-02-18 15:11:39 +01:00
fs Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2023-02-05 17:17:10 -08:00
include Char/Misc driver fixes for 6.2-rc7 2023-02-05 11:52:23 -08:00
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kernel Char/Misc driver fixes for 6.2-rc7 2023-02-05 11:52:23 -08:00
lib - Lock the proper critical section when dealing with perf event context 2023-02-05 11:03:56 -08:00
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MAINTAINERS USB fixes for 6.2-rc7 2023-02-05 12:19:55 -08:00
Makefile Linux 6.2-rc7 2023-02-05 13:13:28 -08:00
README

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

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
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.