Hans, Bartlomiej, can you guys please review this patch?
Thanks.
On Fri, May 23, 2014 at 12:35:10PM -0500, suravee.suthikulpanit@xxxxxxx wrote:
> From: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
>
> The current platform AHCI drier does not set the dma_mask correctly
> for 64-bit DMA capable AHCI controller. This patch checks the AHCI
> capability bit and set the dma_mask and coherent_dma_mask accordingly.
>
> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
> ---
> drivers/ata/libahci_platform.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
> index 7cb3a85..85049ef 100644
> --- a/drivers/ata/libahci_platform.c
> +++ b/drivers/ata/libahci_platform.c
> @@ -368,6 +368,15 @@ int ahci_platform_init_host(struct platform_device *pdev,
> ahci_init_controller(host);
> ahci_print_info(host, "platform");
>
> + if (hpriv->cap & HOST_CAP_64) {
> + if (!dev->dma_mask)
> + dev->dma_mask = &dev->coherent_dma_mask;
> +
> + rc = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
> + if (rc)
> + return rc;
> + }
> +
> return ata_host_activate(host, irq, ahci_interrupt, IRQF_SHARED,
> &ahci_platform_sht);
> }
> --
> 1.9.0
>
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--
tejun
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