[alsa-devel] [PATCH] regmap: Fix possible sleep-in-atomic in fast io mode

Takashi Iwai tiwai at suse.de
Tue Mar 18 12:38:42 CET 2014

At Tue, 18 Mar 2014 11:27:56 +0000,
Mark Brown wrote:
> On Tue, Mar 18, 2014 at 12:20:00PM +0100, Takashi Iwai wrote:
> > regmap deploys the spinlock for the protection when set up in fast_io
> > mode.  But some places are still left with possible sleep in the lock,
> > typically allocating memory with GFP_KERNEL.  This patch fixes these
> > calls by moving the allocations out of the lock.
> You should have split these two unrelated changes into two patches.

You're suggesting to split the patch to fix for regmap_bulk_write()
and regmap_register_patch()?  I don't mind to split, but basically
both are the very same bug, and the solution is very same, too.

>  I already have a fix for the cache sync in my tree locally which I will
> test just a soon as I fix whatever broke the -next build for me.

I don't know why you're talking about the build fix...


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