From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:50962 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932172AbbLGMTI (ORCPT ); Mon, 7 Dec 2015 07:19:08 -0500 Subject: Patch "usb: gadget: atmel_usba_udc: Expose correct device speed" has been added to the 4.1-stable tree To: dgilbert@interlog.com, balbi@ti.com, boris.brezillon@free-electrons.com, gregkh@linuxfoundation.org Cc: , From: Date: Mon, 07 Dec 2015 00:28:15 -0800 Message-ID: <1449476895632@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled usb: gadget: atmel_usba_udc: Expose correct device speed to the 4.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: usb-gadget-atmel_usba_udc-expose-correct-device-speed.patch and it can be found in the queue-4.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From d134c48d889ddceadf4c990e6f3df16b816ed5d4 Mon Sep 17 00:00:00 2001 From: Douglas Gilbert Date: Mon, 16 Nov 2015 19:22:08 +0100 Subject: usb: gadget: atmel_usba_udc: Expose correct device speed From: Douglas Gilbert commit d134c48d889ddceadf4c990e6f3df16b816ed5d4 upstream. Following changes that appeared in lk 4.0.0, the gadget udc driver for some ARM based Atmel SoCs (e.g. at91sam9x5 and sama5d3 families) incorrectly deduced full-speed USB link speed even when the hardware had negotiated a high-speed link. The fix is to make sure that the UDPHS Interrupt Enable Register value does not mask the SPEED bit in the Interrupt Status Register. For a mass storage gadget this problem lead to failures when the host had a USB 3 port with the xhci_hcd driver. If the host was a USB 2 port using the ehci_hcd driver then the mass storage gadget worked (but probably at a lower speed than it should have). Signed-off-by: Douglas Gilbert Reviewed-by: Boris Brezillon Fixes: 9870d895ad87 ("usb: atmel_usba_udc: Mask status with enabled irqs") Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/udc/atmel_usba_udc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -1634,7 +1634,7 @@ static irqreturn_t usba_udc_irq(int irq, spin_lock(&udc->lock); int_enb = usba_int_enb_get(udc); - status = usba_readl(udc, INT_STA) & int_enb; + status = usba_readl(udc, INT_STA) & (int_enb | USBA_HIGH_SPEED); DBG(DBG_INT, "irq, status=%#08x\n", status); if (status & USBA_DET_SUSPEND) { Patches currently in stable-queue which might be from dgilbert@interlog.com are queue-4.1/usb-gadget-atmel_usba_udc-expose-correct-device-speed.patch