[Bug 97969] [radeonsi, bisected: fb827c0] Video decoding shows green artifacts

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97969

--- Comment #3 from Alexandre Demers <alexandre.f.demers at gmail.com> ---
With the patch, when playing problematic videos, I get a black screen instead
of a partial display with green artifacts.

Also, with and without the patch, dmesg catches the following when playing the
problematic videos (I should have had a look previously):
[76261.125581] [drm:radeon_uvd_cs_parse [radeon]] *ERROR* Handle 0x8fd80001
already in use!
[76261.125594] [drm:radeon_cs_ioctl [radeon]] *ERROR* Invalid command stream !
[76261.126059] [drm:radeon_uvd_cs_parse [radeon]] *ERROR* Handle 0x8fd80001
already in use!
[76261.126072] [drm:radeon_cs_ioctl [radeon]] *ERROR* Invalid command stream !
[76261.126441] [drm:radeon_uvd_cs_parse [radeon]] *ERROR* Handle 0x8fd80001
already in use!
[76261.126452] [drm:radeon_cs_ioctl [radeon]] *ERROR* Invalid command stream !

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