Friday 08 January 2010 18:14:06 Sergei Shtylyov napisaƂ(a):
> Tony Lindgren wrote:
> > From: Janusz Krzysztofik <jkrzy...@tis.icnet.pl>
> >
> > In its current form, the omap_mcbsp_request() function can return after
> > irq_request() failure without any cleanups, effectively locking out the
> > port forever with clocks left running. Fix it.
> >
> > Signed-off-by: Janusz Krzysztofik <jkrzy...@tis.icnet.pl>
> > Acked-by: Jarkko Nikula <jhnik...@gmail.com>
> > Acked-by: Peter Ujfalusi <peter.ujfal...@nokia.com>
> > Signed-off-by: Tony Lindgren <t...@atomide.com>
>
> [...]
>
> > diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
> > index 2cc1cc3..f757672 100644
> > --- a/arch/arm/plat-omap/mcbsp.c
> > +++ b/arch/arm/plat-omap/mcbsp.c
> > @@ -436,7 +436,7 @@ int omap_mcbsp_request(unsigned int id)
> >                     dev_err(mcbsp->dev, "Unable to request TX IRQ %d "
> >                                     "for McBSP%d\n", mcbsp->tx_irq,
> >                                     mcbsp->id);
> > -                   return err;
> > +                   goto error;
> >             }
> >
> >             init_completion(&mcbsp->rx_irq_completion);
> > @@ -446,12 +446,26 @@ int omap_mcbsp_request(unsigned int id)
> >                     dev_err(mcbsp->dev, "Unable to request RX IRQ %d "
> >                                     "for McBSP%d\n", mcbsp->rx_irq,
> >                                     mcbsp->id);
> > -                   free_irq(mcbsp->tx_irq, (void *)mcbsp);
> > -                   return err;
> > +                   goto tx_irq;
> >             }
> >     }
> >
> >     return 0;
> > +tx_irq:
>
>     As if this wasn't a label for error cleanup, i.e. labels could be named
> more consistently, both including 'err' or 'error'...
>
> > +   free_irq(mcbsp->tx_irq, (void *)mcbsp);
> > +error:
> > +   if (mcbsp->pdata && mcbsp->pdata->ops && mcbsp->pdata->ops->free)
> > +                   mcbsp->pdata->ops->free(id);
>
>     This line is overindented.
>

Sergei,
Thanks for pointing these out.

Tony,
Since you have already sent a pull request covering this patch, I propose I 
will address both issues soon when I revisit the source while further 
modifying this function for McBSP register cache support, OK?

Thanks,
Janusz
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