https://bugs.freedesktop.org/show_bug.cgi?id=107375
--- Comment #1 from Michel Dänzer michel@daenzer.net --- Created attachment 140814 --> https://bugs.freedesktop.org/attachment.cgi?id=140814&action=edit Do posting read in psp_v10_0_cmd_submit
Does this patch help by any chance?
(In reply to Paul Menzel from comment #0)
Also, I wonder why the sleep in the trace is 3 ms instead of 1 ms like in the code.
Maybe your kernel is configured with CONFIG_HZ=300? Anyway, it doesn't really matter, as it's waiting for the PSP to finish processing the command.