The lower layers of sysfs will not allow an "offset" of more than GEN7_L3LOG_SIZE and also l3_access_valid() caps it a second time. But it's a little easier to audit if we don't have to worry that the subtraction will result in negative values.

Signed-off-by: Dan Carpenter dan.carpenter@oracle.com

diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index d572435..b3f62b4 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -127,7 +127,7 @@ i915_l3_read(struct file *filp, struct kobject *kobj, if (ret) return ret;

- count = min_t(int, GEN7_L3LOG_SIZE-offset, count); + count = min_t(size_t, GEN7_L3LOG_SIZE - offset, count);

ret = i915_mutex_lock_interruptible(drm_dev); if (ret)