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| author | Nathan Chancellor <natechancellor@gmail.com> | 2019-03-07 14:27:56 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-04-27 09:33:57 +0200 |
| commit | 35ee305cfe4c3827a90283bcc37ff364838baf9c (patch) | |
| tree | 6503292a935234f41a38da749a8f2d69bff9f06b /arch/m32r/kernel/signal.c | |
| parent | 158c4cb0d6866f65d6416ae66876a59f8f992c55 (diff) | |
x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error
[ Upstream commit e898e69d6b9475bf123f99b3c5d1a67bb7cb2361 ]
When building with -Wsometimes-uninitialized, Clang warns:
arch/x86/kernel/hw_breakpoint.c:355:2: warning: variable 'align' is used
uninitialized whenever switch default is taken
[-Wsometimes-uninitialized]
The default cannot be reached because arch_build_bp_info() initializes
hw->len to one of the specified cases. Nevertheless the warning is valid
and returning -EINVAL makes sure that this cannot be broken by future
modifications.
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: clang-built-linux@googlegroups.com
Link: https://github.com/ClangBuiltLinux/linux/issues/392
Link: https://lkml.kernel.org/r/20190307212756.4648-1-natechancellor@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/m32r/kernel/signal.c')
0 files changed, 0 insertions, 0 deletions