Fixed this kernel test robot warning:
drivers/gpu/drm/amd/amdgpu/../display/dmub/inc/dmub_cmd.h:2893:12: warning: variable 'temp' set but not used [-Wunused-but-set-variable]
Replaced the assignment to the unused temp variable with READ_ONCE() macro to flush the writes.
Signed-off-by: Aashish Sharma shraash@google.com --- drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h index 873ecd04e01d..b7981a781701 100644 --- a/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h +++ b/drivers/gpu/drm/amd/display/dmub/inc/dmub_cmd.h @@ -2913,13 +2913,12 @@ static inline void dmub_rb_flush_pending(const struct dmub_rb *rb) uint32_t wptr = rb->wrpt;
while (rptr != wptr) { - uint64_t volatile *data = (uint64_t volatile *)((uint8_t *)(rb->base_address) + rptr); + uint64_t *data = (uint64_t volatile *)((uint8_t *)(rb->base_address) + rptr); //uint64_t volatile *p = (uint64_t volatile *)data; - uint64_t temp; uint8_t i;
for (i = 0; i < DMUB_RB_CMD_SIZE / sizeof(uint64_t); i++) - temp = *data++; + (void)READ_ONCE(*data++);
rptr += DMUB_RB_CMD_SIZE; if (rptr >= rb->capacity)