Commit 1ad87e72 authored Aug 10, 2013 by Guillaume Clement Committed by Daniel Vetter Aug 22, 2013

i915: Fix SDVO potentially turning off randomly



Some Poulsbo cards seem to incorrectly report
SDVO_CMD_STATUS_TARGET_NOT_SPECIFIED instead of
SDVO_CMD_STATUS_PENDING, which causes the display to be turned off.

This could also happen to i915.

Signed-off-by: Guillaume Clement <gclement@baobob.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

parent 7ace7ef2

drivers/gpu/drm/i915/intel_sdvo.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -538,7 +538,8 @@ static bool intel_sdvo_read_response(struct intel_sdvo *intel_sdvo,
		&status))
		goto log_fail;

		while (status == SDVO_CMD_STATUS_PENDING && --retry) {
		while ((status == SDVO_CMD_STATUS_PENDING \|\|
		status == SDVO_CMD_STATUS_TARGET_NOT_SPECIFIED) && --retry) {
		if (retry < 10)
		msleep(15);
		else