[PATCH] drm/amd/display: replace use of msleep(<20) with usleep_range for better accuracy

James Flowers
2025-03-26T07:01:58Z

msleep < 20ms will often sleep for ~20ms (according to Documentation/timers/timers-howto.rst).

Signed-off-by: James Flowers <bold.zone2373@fastmail.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
index 2cd35392e2da..2d225735602b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -682,7 +682,7 @@ static bool execute_synaptics_rc_command(struct drm_dp_aux *aux,
if (rc_cmd == cmd)
// active is 0
break;
- msleep(10);
+ usleep_range(10000, 10200);
}

// read rc result
--
2.49.0