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authorRoel Kluin <roel.kluin@gmail.com>2009-11-13 13:37:34 +0300
committerEric Miao <eric.y.miao@gmail.com>2009-11-16 19:50:10 +0300
commit7df56c2586049a06b007474ca059779c81ddb1ff (patch)
tree3853675bae18a130b5ed98d084c38c730663c6cd /arch/arm/plat-pxa
parent10d5d99e880692a31ddc59b9f5d063e928fc0c89 (diff)
downloadlinux-7df56c2586049a06b007474ca059779c81ddb1ff.tar.xz
[ARM] pxa: ensure mfp is in correct range in mfp_{read,write}
Ensure we do not read/write outside array boundaries with a negative index. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/plat-pxa')
-rw-r--r--arch/arm/plat-pxa/mfp.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm/plat-pxa/mfp.c b/arch/arm/plat-pxa/mfp.c
index 9405d0379c85..be58f9fe65b0 100644
--- a/arch/arm/plat-pxa/mfp.c
+++ b/arch/arm/plat-pxa/mfp.c
@@ -207,7 +207,7 @@ unsigned long mfp_read(int mfp)
{
unsigned long val, flags;
- BUG_ON(mfp >= MFP_PIN_MAX);
+ BUG_ON(mfp < 0 || mfp >= MFP_PIN_MAX);
spin_lock_irqsave(&mfp_spin_lock, flags);
val = mfpr_readl(mfp_table[mfp].mfpr_off);
@@ -220,7 +220,7 @@ void mfp_write(int mfp, unsigned long val)
{
unsigned long flags;
- BUG_ON(mfp >= MFP_PIN_MAX);
+ BUG_ON(mfp < 0 || mfp >= MFP_PIN_MAX);
spin_lock_irqsave(&mfp_spin_lock, flags);
mfpr_writel(mfp_table[mfp].mfpr_off, val);