drm/atmel-hlcdc: Handle drm_atomic_helper_swap_state failure
authorMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Tue, 11 Jul 2017 14:33:06 +0000 (16:33 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 26 Jul 2017 11:22:41 +0000 (13:22 +0200)
commitf4d41d930e4a876152c705e16cfb461ba18f1e6f
treeaea772e24eaec54fd2d31b22e964216caff18d5e
parent8572636e45167adbdb997fe5c43122bf77fd2291
drm/atmel-hlcdc: Handle drm_atomic_helper_swap_state failure

drm_atomic_helper_swap_state() will be changed to interruptible waiting
in the next few commits, so all drivers have to be changed to handling
failure.

Atmel tracks pending commits through dc->commit.pending, so it can
ignore the changes by setting stall = false. We never return failure in
this case, so make failure a BUG_ON.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170711143314.2148-5-maarten.lankhorst@linux.intel.com
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c