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authorAxel Lin <axel.lin@gmail.com>2011-05-16 22:19:01 +0800
committerLiam Girdwood <lrg@slimlogic.co.uk>2011-05-27 10:49:09 +0100
commit0514e9acd7655c708fbf12a659ea43d835bc688a (patch)
tree5f9ecf1224773a0ca671d8d516c507d133cbf2f1 /drivers/mfd/tps65910.c
parent4aa922c024b2a194d7b68b22a66dfcf86e7838b3 (diff)
downloadlinux-0514e9acd7655c708fbf12a659ea43d835bc688a.tar.bz2
mfd: Fix off-by-one value range checking for tps65910_i2c_write
If bytes == (TPS65910_MAX_REGISTER + 1), we have a buffer overflow when doing memcpy(&msg[1], src, bytes). Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers/mfd/tps65910.c')
-rw-r--r--drivers/mfd/tps65910.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
index bf649cf6a0ae..e31824870b9f 100644
--- a/drivers/mfd/tps65910.c
+++ b/drivers/mfd/tps65910.c
@@ -71,7 +71,7 @@ static int tps65910_i2c_write(struct tps65910 *tps65910, u8 reg,
u8 msg[TPS65910_MAX_REGISTER + 1];
int ret;
- if (bytes > (TPS65910_MAX_REGISTER + 1))
+ if (bytes > TPS65910_MAX_REGISTER)
return -EINVAL;
msg[0] = reg;