Re: [BUG] [Resend] Possible sleep-in-atomic-context bugs involving regmap_lock_mutex()

[Jia-Ju Bai]

Thanks for the reply :)

On 2018/9/11 1:41, Mark Brown wrote:
> On Thu, Aug 30, 2018 at 10:34:20AM +0800, Jia-Ju Bai wrote:
>
> > My static tool DSAC reports many sleep-in-atomic-context bugs involving
> > regmap_lock_mutex(), so I wonder whether this function is possible to be
> > executed in atomic context.
> Have you actually analyzed the code paths that are really taken here?
> Static tools really don't cope very well with the pluggable locking in
> regmap.  If there are problems I'd suggest reporting them to the authors
> of the drivers using them, it's not really anything to do with regmap if
> they've messed up their locking.

Okay, I will send the reports to the developers for these drivers.


Best wishes,
Jia-Ju Bai