linux-kernel - [127/205] usb: musb: Fix a bug by making suspend interrupt available in device mode

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Date:	Fri, 30 Jul 2010 10:52:24 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Maulik Mankad <x0082077@...com>,
	David Brownell <david-b@...bell.net>,
	Felipe Balbi <felipe.balbi@...ia.com>
Subject: [127/205] usb: musb: Fix a bug by making suspend interrupt available in device mode

2.6.34-stable review patch.  If anyone has any objections, please let us know.

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

From: Maulik Mankad <x0082077@...com>

commit 2bb14cbf04ded4b9e394a6ba9e4f06b82fbac8b2 upstream.

As a part of aligning the ISR code for MUSB with the specs, the
ISR code was re-written.

See Commit 1c25fda4a09e8229800979986ef399401053b46e (usb: musb: handle
irqs in the order dictated by programming guide)

With this the suspend interrupt came accidently under CONFIG_USB_MUSB_HDRC_HCD.

The fix brings suspend interrupt handling outside
CONFIG_USB_MUSB_HDRC_HCD.

Signed-off-by: Maulik Mankad <x0082077@...com>
Cc: David Brownell <david-b@...bell.net>
Acked-by: Felipe Balbi <felipe.balbi@...ia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/usb/musb/musb_core.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -562,7 +562,7 @@ static irqreturn_t musb_stage0_irq(struc
 		handled = IRQ_HANDLED;
 	}
 
-
+#endif
 	if (int_usb & MUSB_INTR_SUSPEND) {
 		DBG(1, "SUSPEND (%s) devctl %02x power %02x\n",
 				otg_state_string(musb), devctl, power);
@@ -625,6 +625,7 @@ static irqreturn_t musb_stage0_irq(struc
 		}
 	}
 
+#ifdef CONFIG_USB_MUSB_HDRC_HCD
 	if (int_usb & MUSB_INTR_CONNECT) {
 		struct usb_hcd *hcd = musb_to_hcd(musb);
 		void __iomem *mbase = musb->mregs;


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