linux-kernel - mfd: omap-usb-host: bug fix for 3.9

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Message-ID: <512E120D.7000101@ti.com>
Date:	Wed, 27 Feb 2013 16:02:53 +0200
From:	Roger Quadros <rogerq@...com>
To:	"sameo@...ux.intel.com" <sameo@...ux.intel.com>
CC:	"Balbi, Felipe" <balbi@...com>,
	Linux USB Mailing List <linux-usb@...r.kernel.org>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	"tony@...mide.com" <tony@...mide.com>
Subject: mfd: omap-usb-host: bug fix for 3.9

Hi Samuel,

One of my patch that I sent for 3.9 introduces a bug that fails to
update the port mode hostconfig register. Because of that, the port modes will
always be 0 (i.e. EHCI PHY mode) and other modes will not work. PHY mode will
work, so beagle/panda have no issues.

Since my hardware setup uses only PHY mode, I couldn't catch this problem earlier.

Below is the fix.

>From 82466757a212bd8b54d806c9d56b1acccbd4d464 Mon Sep 17 00:00:00 2001
From: Roger Quadros <rogerq@...com>
Date: Wed, 27 Feb 2013 15:19:24 +0200
Subject: [PATCH] mfd: omap-usb-host: Actually update hostconfig

The helper functions omap_usbhs_rev1_hostconfig()
and omap_usbhs_rev2_hostconfig() don't write into
the hostconfig register. Make sure that we write
the return value into the hostconfig register.

Signed-off-by: Roger Quadros <rogerq@...com>
---
 drivers/mfd/omap-usb-host.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 6b5edf6..4febc5c 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -460,15 +460,15 @@ static void omap_usbhs_init(struct device *dev)
 
 	switch (omap->usbhs_rev) {
 	case OMAP_USBHS_REV1:
-		omap_usbhs_rev1_hostconfig(omap, reg);
+		reg = omap_usbhs_rev1_hostconfig(omap, reg);
 		break;
 
 	case OMAP_USBHS_REV2:
-		omap_usbhs_rev2_hostconfig(omap, reg);
+		reg = omap_usbhs_rev2_hostconfig(omap, reg);
 		break;
 
 	default:	/* newer revisions */
-		omap_usbhs_rev2_hostconfig(omap, reg);
+		reg = omap_usbhs_rev2_hostconfig(omap, reg);
 		break;
 	}
 
-- 
1.7.4.1
--
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