[Intel-gfx] [PATCH 1/4] drm/i915: Avoid EBUSY retry on intel_dp_aux_ch.

[Rodrigo Vivi]

EBUSY retries are already in place at drm level.
We don't need to replicate the job here.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/intel_dp.c | 20 ++------------------
 1 file changed, 2 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 09bdd94..d054129 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -818,24 +818,8 @@ intel_dp_aux_ch(struct intel_dp *intel_dp,
 
 	intel_aux_display_runtime_get(dev_priv);
 
-	/* Try to wait for any previous AUX channel activity */
-	for (try = 0; try < 3; try++) {
-		status = I915_READ_NOTRACE(ch_ctl);
-		if ((status & DP_AUX_CH_CTL_SEND_BUSY) == 0)
-			break;
-		msleep(1);
-	}
-
-	if (try == 3) {
-		static u32 last_status = -1;
-		const u32 status = I915_READ(ch_ctl);
-
-		if (status != last_status) {
-			WARN(1, "dp_aux_ch not started status 0x%08x\n",
-			     status);
-			last_status = status;
-		}
-
+	status = I915_READ_NOTRACE(ch_ctl);
+	if ((status & DP_AUX_CH_CTL_SEND_BUSY) != 0) {
 		ret = -EBUSY;
 		goto out;
 	}
-- 
2.4.3