diff mbox

[13/38] ARM: shmobile: apmu: correct type of CPU id

Message ID 1442842450-29769-14-git-send-email-a.hajda@samsung.com (mailing list archive)
State Accepted
Commit 6e67d2ccb8b5ac6dbc6a0cfdf8320d68fa289193
Delegated to: Simon Horman
Headers show

Commit Message

Andrzej Hajda Sept. 21, 2015, 1:33 p.m. UTC
CPU id can be negative, so it cannot be assigned to unsigned variable.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
---
 arch/arm/mach-shmobile/platsmp-apmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Simon Horman Oct. 2, 2015, 1:57 a.m. UTC | #1
On Mon, Sep 21, 2015 at 03:33:45PM +0200, Andrzej Hajda wrote:
> CPU id can be negative, so it cannot be assigned to unsigned variable.
> 
> The problem has been detected using proposed semantic patch
> scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].
> 
> [1]: http://permalink.gmane.org/gmane.linux.kernel/2038576
> 
> Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>

Thanks, I have queued this up as a cleanup for v4.4.
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diff mbox

Patch

diff --git a/arch/arm/mach-shmobile/platsmp-apmu.c b/arch/arm/mach-shmobile/platsmp-apmu.c
index 4e54512..292c67b 100644
--- a/arch/arm/mach-shmobile/platsmp-apmu.c
+++ b/arch/arm/mach-shmobile/platsmp-apmu.c
@@ -88,7 +88,7 @@  static void apmu_init_cpu(struct resource *res, int cpu, int bit)
 static void apmu_parse_cfg(void (*fn)(struct resource *res, int cpu, int bit),
 			   struct rcar_apmu_config *apmu_config, int num)
 {
-	u32 id;
+	int id;
 	int k;
 	int bit, index;
 	bool is_allowed;