OMAPDSS: Fix crash with DT boot
authorTomi Valkeinen <tomi.valkeinen@ti.com>
Thu, 23 May 2013 09:07:50 +0000 (12:07 +0300)
committerTomi Valkeinen <tomi.valkeinen@ti.com>
Thu, 23 May 2013 09:54:21 +0000 (12:54 +0300)
commit591a0ac7f14aae6bf11b1cb6b5a68480bd644ddb
treecb2b4707ecd8aaac1eff6901b311d4f839c69383
parentb358c6cf029cb67b3ed9cc367fb46f1fa3228c5b
OMAPDSS: Fix crash with DT boot

When booting with DT, there's a crash when omapfb is probed. This is
caused by the fact that omapdss+DT is not yet supported, and thus
omapdss is not probed at all. On the other hand, omapfb is always
probed. When omapfb tries to use omapdss, there's a NULL pointer
dereference crash. The same error should most likely happen with omapdrm
and omap_vout also.

To fix this, add an "initialized" state to omapdss. When omapdss has
been probed, it's marked as initialized. omapfb, omapdrm and omap_vout
check this state when they are probed to see that omapdss is actually
there.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
drivers/gpu/drm/omapdrm/omap_drv.c
drivers/media/platform/omap/omap_vout.c
drivers/video/omap2/dss/core.c
drivers/video/omap2/omapfb/omapfb-main.c
include/video/omapdss.h