linux-kernel - [PATCH] [32/50] usb: musb: restore INDEX register in resume path

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Date:	Thu, 28 Jul 2011 16:44:36 -0700 (PDT)
From:	Andi Kleen <andi@...stfloor.org>
To:	ajay.gupta@...com, gadiyar@...com, balbi@...com,
	ak@...ux.intel.com, linux-kernel@...r.kernel.org,
	stable@...nel.org, tim.bird@...sony.com
Subject: [PATCH] [32/50] usb: musb: restore INDEX register in resume path

2.6.35-longterm review patch.  If anyone has any objections, please let me know.

------------------
From: Ajay Kumar Gupta <ajay.gupta@...com>

[ upstream commit 3c5fec75e121b21a2eb35e5a6b44291509abba6f ]

Restoring the missing INDEX register value in musb_restore_context().
Without this suspend resume functionality is broken with offmode
enabled.

Cc: stable@...nel.org
Acked-by: Anand Gadiyar <gadiyar@...com>
Signed-off-by: Ajay Kumar Gupta <ajay.gupta@...com>
Signed-off-by: Felipe Balbi <balbi@...com>
Signed-off-by: Andi Kleen <ak@...ux.intel.com>

Index: linux-2.6.35.y/drivers/usb/musb/musb_core.c
===================================================================
--- linux-2.6.35.y.orig/drivers/usb/musb/musb_core.c
+++ linux-2.6.35.y/drivers/usb/musb/musb_core.c
@@ -1697,6 +1697,7 @@ void musb_dma_completion(struct musb *mu
 			}
 		}
 	}
+	musb_writeb(musb_base, MUSB_INDEX, musb->context.index);
 }
 
 #else
--
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