This is a note to let you know that I've just added the patch titled
usb: host: xhci-rcar: Avoid long wait in xhci_reset()
to my usb git tree which can be found at
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git
in the usb-testing branch.
The patch will show up in the next release of the linux-next tree
(usually sometime within the next 24 hours during the week.)
The patch will be merged to the usb-next branch sometime soon,
after it passes testing, and the merge window is open.
If you have any questions about this process, please let me know.
>From f879fc32aa0c96fbac261b3d857a1239d554ad01 Mon Sep 17 00:00:00 2001
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Date: Fri, 6 May 2016 15:20:11 +0900
Subject: usb: host: xhci-rcar: Avoid long wait in xhci_reset()
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)
Cc: <stable@xxxxxxxxxxxxxxx> # v3.17+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
Reviewed-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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 3050b18b2447..e9d4dde3e9b3 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -35,6 +35,7 @@ config USB_XHCI_PCI
config USB_XHCI_PLATFORM
tristate "Generic xHCI driver for a platform device"
+ select USB_XHCI_RCAR if ARCH_RENESAS
---help---
Adds an xHCI host driver for a generic platform device, which
provides a memory space and an irq.
@@ -63,7 +64,7 @@ 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_RENESAS || COMPILE_TEST
---help---
Say 'Y' to enable the support for the xHCI host controller
--
2.8.2
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