Messages in this thread | | | Date | Fri, 6 Jun 2014 11:10:58 -0500 | From | Suravee Suthikulanit <> | Subject | Re: [PATCH 1/1] ata: Check and set 64-bit DMA mask for platform AHCI driver |
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Hans/Bartlomiej,
Do you guys have any questions about this patch?
Thank you,
Suravee
On 6/3/2014 12:58 PM, Tejun Heo wrote: > 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 >
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