diff options
| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2018-11-10 14:16:53 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2018-11-12 12:50:13 +0300 |
| commit | 350c03e880038bf60184500bab9025d3361c0b0e (patch) | |
| tree | 76a6163f8f58878967e4d09f05ffdf032b5c5dfc /drivers/gpu/drm | |
| parent | f8523b64d2d2f94bb429c15166d7601d39243c4d (diff) | |
| download | linux-350c03e880038bf60184500bab9025d3361c0b0e.tar.xz | |
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/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/dss/dsi.c | 7 |
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) |