From 18016e35d448d35739f8640b51476709c07e95db Mon Sep 17 00:00:00 2001 From: "Stanley.Miao" Date: Fri, 3 Sep 2010 05:03:48 +0200 Subject: OMAP: DSS2: don't power off a panel twice If we blank the panel by echo 1 > /sys/devices/platform/omapfb/graphics/fb0/blank Then, we reboot the sytem, the kernel will crash at drivers/video/omap2/dss/core.c:323 This is because the panel is closed twice. Now check the state of a dssdev to forbid a panel is power on or power off twice. Signed-off-by: Stanley.Miao Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c') diff --git a/drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c b/drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c index 10267461991c..0c6896cea2d0 100644 --- a/drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c +++ b/drivers/video/omap2/displays/panel-sharp-lq043t1dg01.c @@ -43,6 +43,9 @@ static int sharp_lq_panel_power_on(struct omap_dss_device *dssdev) { int r; + if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) + return 0; + r = omapdss_dpi_display_enable(dssdev); if (r) goto err0; @@ -65,6 +68,9 @@ err0: static void sharp_lq_panel_power_off(struct omap_dss_device *dssdev) { + if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) + return; + if (dssdev->platform_disable) dssdev->platform_disable(dssdev); -- cgit v1.2.1