linux-kernel - [ 170/262] usb: host: xhci: fix compilation error for non-PCI based stacks

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Message-Id: <20120928183018.088223628@linuxfoundation.org>
Date:	Fri, 28 Sep 2012 11:51:39 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg KH <gregkh@...uxfoundation.org>, alan@...rguk.ukuu.org.uk,
	Moiz Sonasath <m-sonasath@...com>,
	Ruchika Kharwar <ruchika@...com>, Felipe Balbi <balbi@...com>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Subject: [ 170/262] usb: host: xhci: fix compilation error for non-PCI based stacks

From: Greg KH <gregkh@...uxfoundation.org>

3.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Moiz Sonasath <m-sonasath@...com>

commit 296365781903226a3fb8758901eaeec09d2798e4 upstream.

For non PCI-based stacks, this function call
usb_disable_xhci_ports(to_pci_dev(hcd->self.controller));
made from xhci_shutdown is not applicable.

Ideally, we wouldn't have any PCI-specific code on
a generic driver such as the xHCI stack, but it looks
like we should just stub usb_disable_xhci_ports() out
for non-PCI devices.

[ balbi@...com: slight improvement to commit log ]

This patch should be backported to kernels as old as 3.0, since the
commit it fixes (e95829f474f0db3a4d940cae1423783edd966027 "xhci: Switch
PPT ports to EHCI on shutdown.") was marked for stable.

Signed-off-by: Moiz Sonasath<m-sonasath@...com>
Signed-off-by: Ruchika Kharwar <ruchika@...com>
Signed-off-by: Felipe Balbi <balbi@...com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/host/pci-quirks.h |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/host/pci-quirks.h
+++ b/drivers/usb/host/pci-quirks.h
@@ -15,6 +15,7 @@ void usb_disable_xhci_ports(struct pci_d
 static inline void usb_amd_quirk_pll_disable(void) {}
 static inline void usb_amd_quirk_pll_enable(void) {}
 static inline void usb_amd_dev_put(void) {}
+static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {}
 #endif  /* CONFIG_PCI */
 
 #endif  /*  __LINUX_USB_PCI_QUIRKS_H  */


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