linux-kernel - [PATCH 3.13 106/187] mfd: omap-usb-host: Fix improper mask use.

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Date:	Mon, 15 Sep 2014 15:08:36 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Michael Welling <mwelling@...cinc.com>,
	Lee Jones <lee.jones@...aro.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13 106/187] mfd: omap-usb-host: Fix improper mask use.

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

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

From: Michael Welling <mwelling@...cinc.com>

commit 46de8ff8e80a6546aa3d2fdf58c6776666301a0c upstream.

single-ulpi-bypass is a flag used for older OMAP3 silicon.

The flag when set, can excite code that improperly uses the
OMAP_UHH_HOSTCONFIG_UPLI_BYPASS define to clear the corresponding bit.
Instead it clears all of the other bits disabling all of the ports in
the process.

Signed-off-by: Michael Welling <mwelling@...cinc.com>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 drivers/mfd/omap-usb-host.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/omap-usb-host.c b/drivers/mfd/omap-usb-host.c
index 142650f..fcf426d 100644
--- a/drivers/mfd/omap-usb-host.c
+++ b/drivers/mfd/omap-usb-host.c
@@ -445,7 +445,7 @@ static unsigned omap_usbhs_rev1_hostconfig(struct usbhs_hcd_omap *omap,
 
 		for (i = 0; i < omap->nports; i++) {
 			if (is_ehci_phy_mode(pdata->port_mode[i])) {
-				reg &= OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
+				reg &= ~OMAP_UHH_HOSTCONFIG_ULPI_BYPASS;
 				break;
 			}
 		}
-- 
1.9.1

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