Attachment 1475374 Details for Bug 1570392 – Add a retry loop to lspcon_wait_mode

[patch] Add a retry loop to lspcon_wait_mode

LSPCON.patch (text/plain), 1.10 KB, created by Fredrik on 2018-08-12 14:45:22 UTC

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Creator: Fredrik

Created: 2018-08-12 14:45:22 UTC

Size: 1.10 KB

patch

obsolete

>diff --git a/drivers/gpu/drm/i915/intel_lspcon.c b/drivers/gpu/drm/i915/intel_lspcon.c
>index 8ae8f42f430a..d2408bb95bb1 100644
>--- a/drivers/gpu/drm/i915/intel_lspcon.c
>+++ b/drivers/gpu/drm/i915/intel_lspcon.c
>@@ -66,6 +66,7 @@ static enum drm_lspcon_mode lspcon_wait_mode(struct intel_lspcon *lspcon,
> 					     enum drm_lspcon_mode mode)
> {
> 	enum drm_lspcon_mode current_mode;
>+	int retry;
> 
> 	current_mode = lspcon_get_current_mode(lspcon);
> 	if (current_mode == mode)
>@@ -74,9 +75,16 @@ static enum drm_lspcon_mode lspcon_wait_mode(struct intel_lspcon *lspcon,
> 	DRM_DEBUG_KMS("Waiting for LSPCON mode %s to settle\n",
> 		      lspcon_mode_name(mode));
> 
>-	wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 100);
>-	if (current_mode != mode)
>-		DRM_ERROR("LSPCON mode hasn't settled\n");
>+	for (retry = 0; retry < 6; retry++) {
>+		if (retry)
>+			usleep_range(500, 1000);
>+		wait_for((current_mode = lspcon_get_current_mode(lspcon)) == mode, 100);
>+
>+		if (current_mode == mode)
>+			break;
>+
>+		DRM_ERROR("LSPCON mode hasn't settled, retrying\n");
>+	}
> 
> out:
> 	DRM_DEBUG_KMS("Current LSPCON mode %s\n",

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Attachments on bug 1570392: 1475374 | 1475389