This is a note to let you know that I've just added the patch titled
topology: Fix compilation warning when not in SMP
to my driver-core git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
in the driver-core-linus branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will hopefully also be merged in Linus's tree for the
next -rc kernel release.
If you have any questions about this process, please let me know.
>From 53974e06603977f348ed978d75c426b0532daa67 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vincent=20Stehl=C3=A9?= <vincent.stehle@xxxxxxxxxxx>
Date: Fri, 4 Apr 2014 08:43:18 +0200
Subject: topology: Fix compilation warning when not in SMP
MIME-Version: 1.0
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The topology_##name() macro does not use its argument when CONFIG_SMP is not
set, as it ultimately calls the cpu_data() macro.
So we avoid maintaining a possibly unused `cpu' variable, to avoid the
following compilation warning:
drivers/base/topology.c: In function ‘show_physical_package_id’:
drivers/base/topology.c:103:118: warning: unused variable ‘cpu’ [-Wunused-variable]
define_id_show_func(physical_package_id);
drivers/base/topology.c: In function ‘show_core_id’:
drivers/base/topology.c:106:106: warning: unused variable ‘cpu’ [-Wunused-variable]
define_id_show_func(core_id);
This can be seen with e.g. x86 defconfig and CONFIG_SMP not set.
Signed-off-by: Vincent Stehlé <vincent.stehle@xxxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # 3.10.x
Cc: <stable@xxxxxxxxxxxxxxx> # 3.13.x
Cc: <stable@xxxxxxxxxxxxxxx> # 3.14.x
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/base/topology.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/base/topology.c b/drivers/base/topology.c
index bbcbd3c43926..be7c1fb7c0c9 100644
--- a/drivers/base/topology.c
+++ b/drivers/base/topology.c
@@ -39,8 +39,7 @@
static ssize_t show_##name(struct device *dev, \
struct device_attribute *attr, char *buf) \
{ \
- unsigned int cpu = dev->id; \
- return sprintf(buf, "%d\n", topology_##name(cpu)); \
+ return sprintf(buf, "%d\n", topology_##name(dev->id)); \
}
#if defined(topology_thread_cpumask) || defined(topology_core_cpumask) || \
--
1.9.0
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