3.19.8-ckt23 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> commit f879fc32aa0c96fbac261b3d857a1239d554ad01 upstream. The firmware of R-Car USB 3.0 host controller will control the reset. So, if the xhci driver doesn't do firmware downloading (e.g. kernel configuration is CONFIG_USB_XHCI_PLATFORM=y and CONFIG_USB_XHCI_RCAR is not set), the reset of USB 3.0 host controller doesn't work correctly. Then, the host controller will cause long wait in xhci_reset() because the CMD_RESET bit of op_regs->command is not cleared for 10 seconds. So, this patch modifies the Kconfig to enable both CONFIG_USB_XHCI_PLATFORM and CONFIG_USB_XHCI_RCAR. Fixes: 4ac8918f3a7 (usb: host: xhci-plat: add support for the R-Car H2 and M2 xHCI controllers) Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Reviewed-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> [ kamal: backport to 4.2-stable: s/ARCH_RENESAS/ARCH_SHMOBILE/ ] Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx> --- drivers/usb/host/Kconfig | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index c87e6e7..0321587 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -33,6 +33,7 @@ config USB_XHCI_PCI config USB_XHCI_PLATFORM tristate + select USB_XHCI_RCAR if ARCH_SHMOBILE config USB_XHCI_MVEBU tristate "xHCI support for Marvell Armada 375/38x" @@ -44,7 +45,7 @@ config USB_XHCI_MVEBU config USB_XHCI_RCAR tristate "xHCI support for Renesas R-Car SoCs" - select USB_XHCI_PLATFORM + depends on USB_XHCI_PLATFORM depends on ARCH_SHMOBILE || COMPILE_TEST ---help--- Say 'Y' to enable the support for the xHCI host controller -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html