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.
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
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