diff options
| author | Jani Nikula <ext-jani.1.nikula@nokia.com> | 2010-04-12 10:06:14 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2010-08-03 15:18:48 +0300 |
| commit | 2c2fc151245df37dba17f4ae1760bfa97e4fd3c5 (patch) | |
| tree | 59f9a374414d17392a20ea3d9d954c751fa9a44e /drivers/video/omap2 | |
| parent | ee52c0ae68c42c5a0c26462b141a521fcc70849a (diff) | |
| download | linux-2c2fc151245df37dba17f4ae1760bfa97e4fd3c5.tar.bz2 | |
OMAP: DSS2: Taal: Change DSI bus locking to avoid deadlock in ESD work
Move dsi_bus_lock/unlock() out of taal_power_on/off() to avoid deadlock
in taal_esd_work().
Signed-off-by: Jani Nikula <ext-jani.1.nikula@nokia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
Diffstat (limited to 'drivers/video/omap2')
| -rw-r--r-- | drivers/video/omap2/displays/panel-taal.c | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c index 4e594bb50f4b..137bad23a64e 100644 --- a/drivers/video/omap2/displays/panel-taal.c +++ b/drivers/video/omap2/displays/panel-taal.c @@ -672,8 +672,6 @@ static int taal_power_on(struct omap_dss_device *dssdev) /* it seems we have to wait a bit until taal is ready */ msleep(5); - dsi_bus_lock(); - r = omapdss_dsi_display_enable(dssdev); if (r) { dev_err(&dssdev->dev, "failed to enable DSI\n"); @@ -744,8 +742,6 @@ static int taal_power_on(struct omap_dss_device *dssdev) omapdss_dsi_vc_enable_hs(TCH, true); - dsi_bus_unlock(); - return 0; err: dev_err(&dssdev->dev, "error while enabling panel, issuing HW reset\n"); @@ -754,8 +750,6 @@ err: omapdss_dsi_display_disable(dssdev); err0: - dsi_bus_unlock(); - return r; } @@ -764,8 +758,6 @@ static void taal_power_off(struct omap_dss_device *dssdev) struct taal_data *td = dev_get_drvdata(&dssdev->dev); int r; - dsi_bus_lock(); - cancel_delayed_work(&td->esd_work); r = taal_dcs_write_0(DCS_DISPLAY_OFF); @@ -784,8 +776,6 @@ static void taal_power_off(struct omap_dss_device *dssdev) omapdss_dsi_display_disable(dssdev); td->enabled = 0; - - dsi_bus_unlock(); } static int taal_enable(struct omap_dss_device *dssdev) @@ -802,7 +792,12 @@ static int taal_enable(struct omap_dss_device *dssdev) goto err; } + dsi_bus_lock(); + r = taal_power_on(dssdev); + + dsi_bus_unlock(); + if (r) goto err; @@ -825,9 +820,13 @@ static void taal_disable(struct omap_dss_device *dssdev) mutex_lock(&td->lock); + dsi_bus_lock(); + if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) taal_power_off(dssdev); + dsi_bus_unlock(); + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; mutex_unlock(&td->lock); @@ -847,7 +846,12 @@ static int taal_suspend(struct omap_dss_device *dssdev) goto err; } + dsi_bus_lock(); + taal_power_off(dssdev); + + dsi_bus_unlock(); + dssdev->state = OMAP_DSS_DISPLAY_SUSPENDED; mutex_unlock(&td->lock); @@ -872,7 +876,12 @@ static int taal_resume(struct omap_dss_device *dssdev) goto err; } + dsi_bus_lock(); + r = taal_power_on(dssdev); + + dsi_bus_unlock(); + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; mutex_unlock(&td->lock); |