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gma500: Fix SDVO turning off randomly

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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.

Signed-off-by: Guillaume Clement <[email protected]>
Acked-by: Patrik Jakobsson <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
This commit is contained in:
Guillaume Clement 2013-08-10 09:06:04 +02:00 • committed by Dave Airlie
commit 6f1e120438
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/gma500/psb_intel_sdvo.c
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@ -500,7 +500,8 @@ static bool psb_intel_sdvo_read_response(struct psb_intel_sdvo *psb_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--) {
udelay(15);
if (!psb_intel_sdvo_read_byte(psb_intel_sdvo,
SDVO_I2C_CMD_STATUS,