"Commit f0ed2ce ([media] uvcvideo: Set error_idx properly for extended
controls API failures) of yours unfortunately causes user space to misbehave
on one of my test systems. Namely, there's no sound under KDE 4.9.4
(Tumbleweed version using pulseaudio) and there's a knotify4 process occupying
one of the CPU cores entirely 100% of the time." — https://lkml.org/lkml/2012/12/23/48"
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