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authorTomi Valkeinen <tomi.valkeinen@ti.com>2013-04-26 13:40:36 +0300
committerTomi Valkeinen <tomi.valkeinen@ti.com>2013-05-02 11:24:20 +0300
commitdfbc32316c6991010328c21e6046b05bac57eb84 (patch)
tree65a764ca011d1c15e7975fff5d693436a2ba1d0e /drivers/video/omap2/omapfb
parentaf56fe3ca6b034685d8a7da4088637fc4fb1a6e7 (diff)
OMAPFB: defer probe if no displays
omapfb requires the panel drivers to have been probed when omapfb is initialized. omapfb does not support insertion of new panels after its probe. This causes a problem in case omapdss or the panel probes have been deferred due to EPROBE_DEFER error, as omapfb won't find any displays. As a quick fix, this patch changes the omapfb probe so that if omapfb does not find any displays, it'll return EPROBE_DEFER. This is not perfect, as with a board with no displays, omapfb will get deferred forever. Also, if the board has multiple displays, but only some of them have been probed, omapfb will start and leave the unprobed displays out. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Diffstat (limited to 'drivers/video/omap2/omapfb')
-rw-r--r--drivers/video/omap2/omapfb/omapfb-main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
index 808f6af83b1..ff00d1d8bd2 100644
--- a/drivers/video/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/omap2/omapfb/omapfb-main.c
@@ -2484,7 +2484,7 @@ static int omapfb_probe(struct platform_device *pdev)
if (fbdev->num_displays == 0) {
dev_err(&pdev->dev, "no displays\n");
- r = -EINVAL;
+ r = -EPROBE_DEFER;
goto cleanup;
}