linux-kernel - Re: [patch] spi: release lock on error path in spi_pump

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Message-Id: <20120311024307.AA5E33E0950@localhost>
Date:	Sat, 10 Mar 2012 19:43:07 -0700
From:	Grant Likely <grant.likely@...retlab.ca>
To:	wharms@....de, Dan Carpenter <dan.carpenter@...cle.com>
Cc:	spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch] spi: release lock on error path in spi_pump_messages()

On Sat, 10 Mar 2012 10:38:27 +0100, walter harms <wharms@....de> wrote:
> 
> 
> Am 10.03.2012 09:57, schrieb Dan Carpenter:
> > We should release the lock here and enable IRQs before returning.
> > 
> > Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> > 
> > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
> > index 5ae1e84..ab1bdce 100644
> > --- a/drivers/spi/spi.c
> > +++ b/drivers/spi/spi.c
> > @@ -535,6 +535,7 @@ static void spi_pump_messages(struct kthread_work *work)
> >  			if (ret) {
> >  				dev_err(&master->dev,
> >  					"failed to unprepare transfer hardware\n");
> > +				spin_unlock_irqrestore(&master->queue_lock, flags);
> >  				return;
> >  			}
> >  		}
> 
> 
> hi Dan,
> do you want to protect dev_err() by a spn_lock ?

Applied, after moving unlock above the dev_err.

g.

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