Messages in this thread | | | Date | Tue, 3 Jun 2014 13:58:27 -0400 | From | Tejun Heo <> | Subject | Re: [PATCH 1/1] ata: Check and set 64-bit DMA mask for platform AHCI driver |
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Hans, Bartlomiej, can you guys please review this patch?
Thanks.
On Fri, May 23, 2014 at 12:35:10PM -0500, suravee.suthikulpanit@amd.com wrote: > From: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> > > 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@amd.com> > --- > 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 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-ide" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
-- tejun
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