linux-kernel - [ 43/72] KMS: fix EDID detailed timing frame rate

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Date:	Tue, 26 Mar 2013 15:51:26 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Torsten Duwe <duwe@....de>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [ 43/72] KMS: fix EDID detailed timing frame rate

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Torsten Duwe <torsten@....de>

commit c19b3b0f6eed552952845e4ad908dba2113d67b4 upstream.

When KMS has parsed an EDID "detailed timing", it leaves the frame rate
zeroed.  Consecutive (debug-) output of that mode thus yields 0 for
vsync.  This simple fix also speeds up future invocations of
drm_mode_vrefresh().

While it is debatable whether this qualifies as a -stable fix I'd apply
it for consistency's sake; drm_helper_probe_single_connector_modes()
does the same thing already for all probed modes.

Signed-off-by: Torsten Duwe <duwe@....de>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/drm_edid.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -917,6 +917,7 @@ set_size:
 	}
 
 	mode->type = DRM_MODE_TYPE_DRIVER;
+	mode->vrefresh = drm_mode_vrefresh(mode);
 	drm_mode_set_name(mode);
 
 	return mode;


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