[alsa-devel] [PATCH] ASoC: tegra: Use flat regcache.
tiwai at suse.de
Tue Mar 18 11:33:09 CET 2014
At Tue, 18 Mar 2014 10:28:58 +0000,
Mark Brown wrote:
> On Tue, Mar 18, 2014 at 07:46:09AM +0100, Takashi Iwai wrote:
> > kmemdup() with GFP_KERNEL in the lock context. Ditto in
> > regmap_register_patch(), which calls krealloc() with GFP_KERNEL.
> So send a patch...
Yeah, yeah, don't rush :)
> > The former could be fixed by moving the lock like below. The fix for
> > the latter depends on whether we need to protect map->patch_regs
> > growth from races or not. If not, krealloc() can be moved out of the
> > lock.
> It should only be happening on init so probably not. On the other hand
> doing it without any sort of locking isn't great.
Right. OTOH, it's still better than papering over with GFP_ATOMIC, I
think. We can just give a proper note in the function description,
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