From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:43818 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753604AbdFSPa7 (ORCPT ); Mon, 19 Jun 2017 11:30:59 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tony Lindgren , Roger Quadros , Lee Jones Subject: [PATCH 4.9 23/60] mfd: omap-usb-tll: Fix inverted bit use for USB TLL mode Date: Mon, 19 Jun 2017 23:17:17 +0800 Message-Id: <20170619151645.519230713@linuxfoundation.org> In-Reply-To: <20170619151644.680979056@linuxfoundation.org> References: <20170619151644.680979056@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: stable-owner@vger.kernel.org List-ID: 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tony Lindgren commit 8b8a84c54aff4256d592dc18346c65ecf6811b45 upstream. Commit 16fa3dc75c22 ("mfd: omap-usb-tll: HOST TLL platform driver") added support for USB TLL, but uses OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF bit the wrong way. The comments in the code are correct, but the inverted use of OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF causes the register to be enabled instead of disabled unlike what the comments say. Without this change the Wrigley 3G LTE modem on droid 4 EHCI bus can be only pinged few times before it stops responding. Fixes: 16fa3dc75c22 ("mfd: omap-usb-tll: HOST TLL platform driver") Signed-off-by: Tony Lindgren Acked-by: Roger Quadros Signed-off-by: Lee Jones Signed-off-by: Greg Kroah-Hartman --- drivers/mfd/omap-usb-tll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mfd/omap-usb-tll.c +++ b/drivers/mfd/omap-usb-tll.c @@ -377,8 +377,8 @@ int omap_tll_init(struct usbhs_omap_plat * and use SDR Mode */ reg &= ~(OMAP_TLL_CHANNEL_CONF_UTMIAUTOIDLE - | OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF | OMAP_TLL_CHANNEL_CONF_ULPIDDRMODE); + reg |= OMAP_TLL_CHANNEL_CONF_ULPINOBITSTUFF; } else if (pdata->port_mode[i] == OMAP_EHCI_PORT_MODE_HSIC) { /*