summaryrefslogtreecommitdiff
path: root/drivers/gpu/msm/kgsl_sharedmem.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/msm/kgsl_sharedmem.c')
-rw-r--r--drivers/gpu/msm/kgsl_sharedmem.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/gpu/msm/kgsl_sharedmem.c b/drivers/gpu/msm/kgsl_sharedmem.c
index 72895c18119f..618e9e9a33a3 100644
--- a/drivers/gpu/msm/kgsl_sharedmem.c
+++ b/drivers/gpu/msm/kgsl_sharedmem.c
@@ -574,12 +574,11 @@ int kgsl_cache_range_op(struct kgsl_memdesc *memdesc, uint64_t offset,
void *addr = (memdesc->hostptr) ?
memdesc->hostptr : (void *) memdesc->useraddr;
- /* Make sure that size is non-zero */
- if (!size)
+ if (size == 0 || size > UINT_MAX)
return -EINVAL;
- /* Make sure that the offset + size isn't bigger than we can handle */
- if ((offset + size) > ULONG_MAX)
+ /* Make sure that the offset + size does not overflow */
+ if ((offset + size < offset) || (offset + size < size))
return -ERANGE;
/* Make sure the offset + size do not overflow the address */