From: jinlong zhang <jinlong.zhang@xxxxxxx>
[why]
while read edid return defer, then it enter to msleep,
but it actually took more time during msleep,
this will cause remaining edid read fail.
[how]
Replacing msleep with udelay, it will not take any extra time, edid return pass finally.
Signed-off-by: jinlong zhang <jinlong.zhang@xxxxxxx>
Reviewed-by: Wenjing Liu <Wenjing.Liu@xxxxxxx>
Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
index 743042d5905a..cdcad82765e0 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
@@ -653,7 +653,7 @@ bool dce_aux_transfer_with_retries(struct ddc_service *ddc,
if ((*payload->reply == AUX_TRANSACTION_REPLY_AUX_DEFER) ||
(*payload->reply == AUX_TRANSACTION_REPLY_I2C_OVER_AUX_DEFER)) {
if (payload->defer_delay > 0)
- msleep(payload->defer_delay);
+ udelay(payload->defer_delay * 1000);
}
}
break;
--
2.17.1
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