From 8d83bbd1198d7d0de2968ec0bde85810b26341e1 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 5 Jan 2016 11:43:16 +0200 Subject: [PATCH] drm/omap: print an error if display enable fails If the panel's enable fails, omap_encoder silently ignores the failure. omapdrm should really handle the failure, but unfortunately the whole encoder enable codepath is expected to always succeed. So for now, catch the enable failure and print an error. Signed-off-by: Tomi Valkeinen Reviewed-by: Laurent Pinchart --- drivers/gpu/drm/omapdrm/omap_encoder.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/omapdrm/omap_encoder.c b/drivers/gpu/drm/omapdrm/omap_encoder.c index 61714e9670ae..0bbb9c59622e 100644 --- a/drivers/gpu/drm/omapdrm/omap_encoder.c +++ b/drivers/gpu/drm/omapdrm/omap_encoder.c @@ -139,11 +139,16 @@ static void omap_encoder_enable(struct drm_encoder *encoder) struct omap_encoder *omap_encoder = to_omap_encoder(encoder); struct omap_dss_device *dssdev = omap_encoder->dssdev; struct omap_dss_driver *dssdrv = dssdev->driver; + int r; omap_encoder_update(encoder, omap_crtc_channel(encoder->crtc), omap_crtc_timings(encoder->crtc)); - dssdrv->enable(dssdev); + r = dssdrv->enable(dssdev); + if (r) + dev_err(encoder->dev->dev, + "Failed to enable display '%s': %d\n", + dssdev->name, r); } static int omap_encoder_atomic_check(struct drm_encoder *encoder, -- 2.20.1