Re: [PATCH] Xilinx: SPI: driver not releasing memory

* Re: [PATCH] Xilinx: SPI: driver not releasing memory
       [not found] <20090227235456.4DED2448057@mail135-wa4.bigfish.com>
@ 2009-03-06 15:49 ` Grant Likely
  2009-03-06 20:00   ` David Brownell
  0 siblings, 1 reply; 2+ messages in thread
From: Grant Likely @ 2009-03-06 15:49 UTC (permalink / raw)
  To: David Brownell
  Cc: linuxppc-dev, jwboyer, akonovalov, John Linn, Linux Kernel Mailing List

David,

Are you okay with this patch and okay with it going in via Ben's
powerpc tree?  Ben wants to ensure that changes outside arch/powerpc/
are properly acked before going into his tree.

Thanks,
g.

On Sat, Feb 28, 2009 at 9:09 PM, Grant Likely <grant.likely@secretlab.ca> wrote:
> On Fri, Feb 27, 2009 at 4:54 PM, John Linn <john.linn@xilinx.com> wrote:
>> The driver was not releasing memory when it was removed or
>> when there was a failure during probe. This fixes it.
>>
>> Signed-off-by: John Linn <john.linn@xilinx.com>
>
> Looks good.
>
> Acked-by: Grant Likely <grant.likely@secretlab.ca>
>
> I'll pick this up into my -next branch and ask Ben to pull it in the
> next week or so.

> ---
> This is an incremental patch to the patch (updated driver
> for device tree) that is in the next branch.
> ---
>  drivers/spi/xilinx_spi.c |    9 +++++++--
>  1 files changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/spi/xilinx_spi.c b/drivers/spi/xilinx_spi.c
> index fe7e5f3..494d3f7 100644
> --- a/drivers/spi/xilinx_spi.c
> +++ b/drivers/spi/xilinx_spi.c
> @@ -354,7 +354,7 @@ static int __init xilinx_spi_of_probe(struct of_device *ofdev,
>        if (xspi->regs == NULL) {
>                rc = -ENOMEM;
>                dev_warn(&ofdev->dev, "ioremap failure\n");
> -               goto put_master;
> +               goto release_mem;
>        }
>        xspi->irq = r_irq->start;
>
> @@ -365,7 +365,7 @@ static int __init xilinx_spi_of_probe(struct of_device *ofdev,
>        prop = of_get_property(ofdev->node, "xlnx,num-ss-bits", &len);
>        if (!prop || len < sizeof(*prop)) {
>                dev_warn(&ofdev->dev, "no 'xlnx,num-ss-bits' property\n");
> -               goto put_master;
> +               goto unmap_io;
>        }
>        master->num_chipselect = *prop;
>
> @@ -397,6 +397,8 @@ free_irq:
>        free_irq(xspi->irq, xspi);
>  unmap_io:
>        iounmap(xspi->regs);
> +release_mem:
> +       release_mem_region(r_mem->start, resource_size(r_mem));
>  put_master:
>        spi_master_put(master);
>        return rc;
> @@ -406,6 +408,7 @@ static int __devexit xilinx_spi_remove(struct of_device *ofdev)
>  {
>        struct xilinx_spi *xspi;
>        struct spi_master *master;
> +       struct resource r_mem;
>
>        master = platform_get_drvdata(ofdev);
>        xspi = spi_master_get_devdata(master);
> @@ -413,6 +416,8 @@ static int __devexit xilinx_spi_remove(struct of_device *ofdev)
>        spi_bitbang_stop(&xspi->bitbang);
>        free_irq(xspi->irq, xspi);
>        iounmap(xspi->regs);
> +       if (!of_address_to_resource(ofdev->node, 0, &r_mem))
> +               release_mem_region(r_mem.start, resource_size(&r_mem));
>        dev_set_drvdata(&ofdev->dev, 0);
>        spi_master_put(xspi->bitbang.master);
>
> --
> 1.5.3.4
>
>
>
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>
>
>

-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.

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