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authorDan Carpenter2010-04-22 11:40:53 +0200
committerDave Airlie2010-06-08 11:03:31 +1000
commit55a4c5c515c1f4b4bde00c443e71ff9f3822013e (patch)
treedbb2d3da6e010a794b25177a8c76af515e89dc14 /drivers/gpu
parent6d696305530c0b3fcd7d15ad87d7203cb53df5b7 (diff)
nouveau: off by one in nv50_gpio_location()
If "gpio->line" is 32 then "nv50_gpio_reg[gpio->line >> 3]" reads past the end of the array. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/nouveau/nv50_gpio.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_gpio.c b/drivers/gpu/drm/nouveau/nv50_gpio.c
index c61782b314e7..bb47ad737267 100644
--- a/drivers/gpu/drm/nouveau/nv50_gpio.c
+++ b/drivers/gpu/drm/nouveau/nv50_gpio.c
@@ -31,7 +31,7 @@ nv50_gpio_location(struct dcb_gpio_entry *gpio, uint32_t *reg, uint32_t *shift)
{
const uint32_t nv50_gpio_reg[4] = { 0xe104, 0xe108, 0xe280, 0xe284 };
- if (gpio->line > 32)
+ if (gpio->line >= 32)
return -EINVAL;
*reg = nv50_gpio_reg[gpio->line >> 3];