Make sure, that we only power on/off the device once.
Signed-off-by: Sebastian Reichel sebastian.reichel@collabora.com --- drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c index 90132d1d1f5d..7f6b1129862a 100644 --- a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c @@ -290,6 +290,9 @@ static int dsicm_power_on(struct panel_drv_data *ddata) u8 id1, id2, id3; int r;
+ if (ddata->enabled) + return 0; + r = regulator_bulk_enable(DCS_REGULATOR_SUPPLY_NUM, ddata->supplies); if (r) { dev_err(&ddata->dsi->dev, "failed to enable supplies: %d\n", r); @@ -354,6 +357,9 @@ static int dsicm_power_off(struct panel_drv_data *ddata) { int r;
+ if (!ddata->enabled) + return 0; + ddata->enabled = 0;
r = mipi_dsi_dcs_set_display_off(ddata->dsi);