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

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Date:	Sat, 10 Mar 2012 10:38:27 +0100
From:	walter harms <wharms@....de>
To:	Dan Carpenter <dan.carpenter@...cle.com>
CC:	Grant Likely <grant.likely@...retlab.ca>,
	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()



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 ?

re,
 wh

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