Add __user annotation to fix related sparse warning while reading
SDMA counters from userland.
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Mukul Joshi <mukul.joshi@xxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
index e0e60b0d0669..e2894967c372 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -157,19 +157,16 @@ int read_sdma_queue_counter(uint64_t q_rptr, uint64_t *val)
{
int ret;
uint64_t tmp = 0;
+ uint64_t __user *sdma_usage_cntr;
if (!val)
return -EINVAL;
/*
* SDMA activity counter is stored at queue's RPTR + 0x8 location.
*/
- if (!access_ok((const void __user *)(q_rptr +
- sizeof(uint64_t)), sizeof(uint64_t))) {
- pr_err("Can't access sdma queue activity counter\n");
- return -EFAULT;
- }
+ sdma_usage_cntr = (uint64_t __user *)q_rptr + 1;
- ret = get_user(tmp, (uint64_t *)(q_rptr + sizeof(uint64_t)));
+ ret = get_user(tmp, sdma_usage_cntr);
if (!ret) {
*val = tmp;
}
--
2.17.1
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