Re: [PATCH] sound/soc/fsl/fsl_dma.c: add missing of_node_put

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Mon, 22 Aug 2011, Timur Tabi wrote:

> Julia Lawall wrote:
> > diff --git a/sound/soc/fsl/fsl_dma.c b/sound/soc/fsl/fsl_dma.c
> > index 0efc04a..b33271b 100644
> > --- a/sound/soc/fsl/fsl_dma.c
> > +++ b/sound/soc/fsl/fsl_dma.c
> > @@ -880,10 +880,12 @@ static struct device_node *find_ssi_node(struct device_node *dma_channel_np)
> >  		np = of_parse_phandle(ssi_np, "fsl,playback-dma", 0);
> >  		if (np == dma_channel_np)
> >  			return ssi_np;
> > +		of_node_put(np);
> >  
> >  		np = of_parse_phandle(ssi_np, "fsl,capture-dma", 0);
> >  		if (np == dma_channel_np)
> >  			return ssi_np;
> > +		of_node_put(np);
> >  	}
> 
> Thanks for catching the problem, Julia, but the fix is not quite correct.  My
> code assumes that of_parse_phandle() doesn't claim the node, but it doesn't
> actually use the node pointer, either.  All I care about is whether 'np' is
> equal to dma_channel_np.  I'm not going to use 'np'.  So I think the real fix is
> this:
> 
> @@ -880,10 +880,12 @@ static struct device_node *find_ssi_node(struct
> device_node *dma_channel_np)
>  		np = of_parse_phandle(ssi_np, "fsl,playback-dma", 0);
> +		of_node_put(np);
>  		if (np == dma_channel_np)
>  			return ssi_np;
> 
>  		np = of_parse_phandle(ssi_np, "fsl,capture-dma", 0);
> +		of_node_put(np);
>  		if (np == dma_channel_np)
>  			return ssi_np;
>  	}
> 
>  	return NULL;

OK, that looks reasonable.

julia
--
To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Kernel Development]     [Kernel Announce]     [Kernel Newbies]     [Linux Networking Development]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Device Mapper]

  Powered by Linux