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SubjectRe: [PATCH 3/7] MFD:rtsx: Declare that the DMA address limitation is 32bit explicitly
On Mon, Dec 24, 2012 at 02:03:30PM +0800, wei_wang@realsil.com.cn wrote:
> From: Wei WANG <wei_wang@realsil.com.cn>
>
> Signed-off-by: Wei WANG <wei_wang@realsil.com.cn>
> ---
> drivers/mfd/rtsx_pcr.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/mfd/rtsx_pcr.c b/drivers/mfd/rtsx_pcr.c
> index fa2c2bc..2ee6be5 100644
> --- a/drivers/mfd/rtsx_pcr.c
> +++ b/drivers/mfd/rtsx_pcr.c
> @@ -1084,6 +1084,10 @@ static int __devinit rtsx_pci_probe(struct pci_dev *pcidev,
> pci_set_master(pcidev);
> synchronize_irq(pcr->irq);
>
> + ret = pci_set_dma_mask(pcidev, DMA_BIT_MASK(32));
> + if (ret < 0)
> + goto disable_irq;

This piece is deep down in rtsx_pci_probe() and if it fails, the _probe
function has do to all the error unwinding on the error path. Why not
push it up before the pci_enable_device(pcidev) call so in case it
fails, you can save yourself all the needless unwinding?

Oh, and ditto here, commit message is missing.

Thanks.

--
Regards/Gruss,
Boris.

Sent from a fat crate under my desk. Formatting is fine.
--


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