From 8a1f4653f27ffd5d61088cf6b95c39bb13bf6132 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@kernel.org>
Date: Tue, 24 Sep 2013 09:52:40 +0200
Subject: [PATCH] x86/UV: Check for alloc_cpumask_var() failures properly in
uv_nmi_setup()
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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>
---
arch/x86/platform/uv/uv_nmi.c | 3 +--
1 file changed, 1 insertion(+), 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));
}
--
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