Re: [PATCH] regulator: core: Ensure we lock all regulators

From: Arnd Bergmann
Date: Tue Dec 01 2015 - 14:37:51 EST


On Tuesday 01 December 2015 16:53:01 Mark Brown wrote:
> On Tue, Dec 01, 2015 at 05:45:17PM +0100, Arnd Bergmann wrote:
> > On Tuesday 01 December 2015 16:40:57 Mark Brown wrote:
>
> > > mutex_lock(&rdev->mutex);
> > > - for (i = 1; rdev->supply; rdev = rdev->supply->rdev, i++)
> > > + for (i = 1; rdev; rdev = rdev->supply->rdev, i++)
> > > mutex_lock_nested(&rdev->mutex, i);
>
> > I think now we have a double lock, the initial mutex_lock() needs to
> > be removed again.
>
> Ugh, I even made that fix before I sent but didn't actually commit it
>

I'm glad I'm not the only one who can screw up a trivial one-line
fix to this damned function. ;-)

I'm still leading with three stupid mistakes over your one though.

Arnd
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