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List: linux-usb
Subject: Re: [PATCH v8 0/3] usb: xhci-platform: Configure 64-bit DMA mask if the platform is capable
From: Duc Dang <dhdang () apm ! com>
Date: 2015-09-30 21:24:30
Message-ID: CADaLNDkQEZ-TA3PS-RdEWTGi3rxgqxHTDgvNO8De+VXeMKeJnw () mail ! gmail ! com
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On Thu, Sep 17, 2015 at 11:19 AM, Duc Dang <dhdang@apm.com> wrote:
> The xhci platform driver does not work with system that only supports
> 64-bit DMA as it requests 32-bit DMA mask during driver initialization.
> This patch set addresses this issue and also adds XHCI-compliant USB
> Controller ACPI identification into xhci-platform driver.
Hi Greg, Mathias,
Arnd already ack-ed the first patch, please let me know if you have
more comment on this set?
>
> Changes from v7:
> - Only use dma_coerce_mask_and_coherent when
> dma_mask is NULL
> - Check the controller DMA capability and configure
> 32-bit dma_mask if it only supports 32-bit DMA
> - Patches is generated over v4.3-rc1
>
> Changes from v6:
> -Add WARN_ON if dma_mask is NULL
> -Use dma_coerce_mask_and_coherent to assign
> dma_mask and coherent_dma_mask
>
> Change from v5:
> -Change comment to "XHCI-compliant USB Controller" as
> "PNP0D10" ID is not X-Gene specific
> -Change comment
> -Assign dma_mask to coherent_dma_mask if dma_mask is NULL
> to make sure dma_set_mask_and_coherent does not fail prematurely.
>
> Changes from v4:
> -Remove #ifdef CONFIG_ACPI
> -Change comment
> -Assign dma_mask to coherent_dma_mask if dma_mask is NULL
> to make sure dma_set_mask_and_coherent does not fail prematurely.
>
> Changes from v3:
> -Regenerate the patch over 4.2-rc5
> -No code change
>
> Changes from v2
> -Replaced tristate with a boolean as the driver doesn't
> compile as a module
> -Correct --help-- to ---help---
>
> Changes from v1
> -Consolidated to use dma_set_mask_and_coherent
> -Got rid of the check against sizeof(dma_addr_t)
> -Renamed from "add support for APM X-Gene to xhci-platform"
> -Removed changes to arm64/Kconfig
> -Made CONFIG_USB_XHCI_PLATFORM a user selectable config option
>
> drivers/usb/host/xhci-plat.c | 29 ++++++++++++++++++++++-------
> drivers/usb/host/xhci.c | 10 ++++++++++
> 2 files changed, 32 insertions(+), 7 deletions(-)
>
> --
> 1.9.1
>
Regards,
Duc Dang.
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