[alsa-devel] [PATCH 15/20] ASoC: fsl: make fsl_ssi driver compilable on ARM/IMX
Russell King - ARM Linux
linux at arm.linux.org.uk
Mon Mar 5 01:04:11 CET 2012
On Sun, Mar 04, 2012 at 11:32:50PM +0000, Tabi Timur-B04825 wrote:
> Russell King - ARM Linux wrote:
> > Is the SCR shared between capture and playback? In that case, what
> > makes this read-modify-write thread safe?
> What's "SCR"?
I assumed you knew the code you were commenting on.
The register these functions seem to be used on appears to be called
> It's not thread-safe on PPC, but then neither is the entire function. You
> can't have two threads attempt to initialize the hardware at the same
Why do you say "can't" - what prevents it? If nothing, then this stuff
is buggy when preempt is enabled, or you're running on SMP.
More information about the Alsa-devel