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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2018-11-10 13:16:53 +0200
committerTomi Valkeinen <tomi.valkeinen@ti.com>2018-11-12 11:50:13 +0200
commit350c03e880038bf60184500bab9025d3361c0b0e (patch)
tree76a6163f8f58878967e4d09f05ffdf032b5c5dfc /drivers
parentf8523b64d2d2f94bb429c15166d7601d39243c4d (diff)
drm/omap: dsi: Ensure the device is active during probe
The probe function performs hardware access to read the number of supported data lanes from a configuration register and thus requires the device to be active. Ensure this by surrounding the access with dsi_runtime_get() and dsi_runtime_put() calls. Fixes: edb715dffdee ("drm/omap: dss: dsi: Move initialization code from bind to probe") Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Tony Lindgren <tony@atomide.com> Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Link: https://patchwork.freedesktop.org/patch/msgid/20181110111654.4387-4-laurent.pinchart@ideasonboard.com
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/omapdrm/dss/dsi.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
index 394c129cfb3b..b9d5ad7e67d8 100644
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -5409,11 +5409,14 @@ static int dsi_probe(struct platform_device *pdev)
/* DSI on OMAP3 doesn't have register DSI_GNQ, set number
* of data to 3 by default */
- if (dsi->data->quirks & DSI_QUIRK_GNQ)
+ if (dsi->data->quirks & DSI_QUIRK_GNQ) {
+ dsi_runtime_get(dsi);
/* NB_DATA_LANES */
dsi->num_lanes_supported = 1 + REG_GET(dsi, DSI_GNQ, 11, 9);
- else
+ dsi_runtime_put(dsi);
+ } else {
dsi->num_lanes_supported = 3;
+ }
r = dsi_init_output(dsi);
if (r)