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| author | Ingo Molnar <mingo@kernel.org> | 2013-09-24 09:52:40 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-09-24 09:52:40 +0200 |
| commit | 8a1f4653f27ffd5d61088cf6b95c39bb13bf6132 (patch) | |
| tree | 01b65fbc25f9ae735063759b694acfa41eb8a4c7 | |
| parent | x86/UV: Add uvtrace support (diff) | |
| download | linux-8a1f4653f27ffd5d61088cf6b95c39bb13bf6132.tar.xz linux-8a1f4653f27ffd5d61088cf6b95c39bb13bf6132.zip | |
x86/UV: Check for alloc_cpumask_var() failures properly in uv_nmi_setup()
GCC warned about:
arch/x86/platform/uv/uv_nmi.c: In function ‘uv_nmi_setup’:
arch/x86/platform/uv/uv_nmi.c:664:2: warning: the address of ‘uv_nmi_cpu_mask’ will always evaluate as ‘true’
The reason is this code:
alloc_cpumask_var(&uv_nmi_cpu_mask, GFP_KERNEL);
BUG_ON(!uv_nmi_cpu_mask);
which is not the way to check for alloc_cpumask_var() failures - its
return code should be checked instead.
Cc: Mike Travis <travis@sgi.com>
Link: http://lkml.kernel.org/n/tip-2pXRemsjupmvonbpmmnzleo1@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
| -rw-r--r-- | arch/x86/platform/uv/uv_nmi.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/x86/platform/uv/uv_nmi.c b/arch/x86/platform/uv/uv_nmi.c index c171ca533156..9126dfb6dbfc 100644 --- a/arch/x86/platform/uv/uv_nmi.c +++ b/arch/x86/platform/uv/uv_nmi.c @@ -660,8 +660,7 @@ void uv_nmi_setup(void) } uv_hub_nmi_per(cpu) = uv_hub_nmi_list[nid]; } - alloc_cpumask_var(&uv_nmi_cpu_mask, GFP_KERNEL); - BUG_ON(!uv_nmi_cpu_mask); + BUG_ON(!alloc_cpumask_var(&uv_nmi_cpu_mask, GFP_KERNEL)); } |