[Bug 109624] [CI][SHARDS] igt at kms_color@* - dmesg-warn / dmesg-fail - *ERROR* mismatch in gamma_mode (expected 0xc0000001, found 0x00000001)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109624

--- Comment #6 from Uma Shankar <uma.shankar at intel.com> ---
I have figured out the reason for this mismatch and apparent warning. It is due
to mask not correctly updated which is used for masking during state readout.
Though the registers were programmed correctly, this mask was not updated and
it was masking the 30 and 31st bit. Hence the mismatch was coming. 

I have floated the patch with this fix. 
https://patchwork.freedesktop.org/patch/287132/

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