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drm/vc4: Skip ULPS latching when we're in that ULPS state already.
authorEric Anholt <eric@anholt.net>
Tue, 31 Oct 2017 19:32:57 +0000 (12:32 -0700)
committerEric Anholt <eric@anholt.net>
Mon, 30 Apr 2018 20:57:13 +0000 (13:57 -0700)
commit1825067e2b49c984d4b1a77f3720a7ae2576d226
tree069bb98c31282403b009f4e286d2897ab64ebc32
parent5e7854bd036ec9b8d8a861def32ecbfd97ca4e77
drm/vc4: Skip ULPS latching when we're in that ULPS state already.

It seems that trying to go from unlatched to unlatched will time out
waiting for STOP, and we can just skip that.

Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20171031193258.17373-1-eric@anholt.net
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
drivers/gpu/drm/vc4/vc4_dsi.c