From: Rodrigo Vivi Date: Tue, 16 Sep 2014 23:18:12 +0000 (-0400) Subject: drm/i915: Fix Sink CRC X-Git-Tag: omap-for-v3.19/fixes-rc1~80^2~79^2~25 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ad9dc91b6e21266bfc6f466db4b95e10211f31ee;p=pandora-kernel.git drm/i915: Fix Sink CRC In some cases like when PSR just got enabled the panel need more vblank times to calculate CRC. I figured that out with the new PSR test cases facing some cases that I had a green screen but a blank CRC. Even with 2 vblank waits on kernel + 2 vblank waits on test case. So let's give up to 6 vblank wait time. However we now check for TEST_CRC_COUNT that shows when panel finished to calculate CRC and has it ready. v2: Jani pointed out attempts decrements was wrong and should never reach the error condition. And Daniel pointed out that EIO is more appropriated than EGAIN. Also I realized that I have to read test_crc_count after setting test_sink v3: Rebase and adding error message Cc: Todd Previte Cc: Daniel Vetter Cc: Jani Nikula Signed-off-by: Rodrigo Vivi Reviewed-by: Todd Previte Signed-off-by: Daniel Vetter --- Reading git-diff-tree failed