From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:36062 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933966AbdERNUf (ORCPT ); Thu, 18 May 2017 09:20:35 -0400 Subject: patch "usb: host: xhci-mem: allocate zeroed Scratchpad Buffer" added to usb-linus To: peter.chen@nxp.com, gregkh@linuxfoundation.org, mathias.nyman@linux.intel.com, stable@vger.kernel.org From: Date: Thu, 18 May 2017 15:20:16 +0200 Message-ID: <1495113616118219@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: host: xhci-mem: allocate zeroed Scratchpad Buffer to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >>From 7480d912d549f414e0ce39331870899e89a5598c Mon Sep 17 00:00:00 2001 From: Peter Chen Date: Wed, 17 May 2017 18:32:01 +0300 Subject: usb: host: xhci-mem: allocate zeroed Scratchpad Buffer According to xHCI ch4.20 Scratchpad Buffers, the Scratchpad Buffer needs to be zeroed. ... The following operations take place to allocate Scratchpad Buffers to the xHC: ... b. Software clears the Scratchpad Buffer to '0' Cc: stable Signed-off-by: Peter Chen Signed-off-by: Mathias Nyman Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-mem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index 69428e970925..12b573cfb846 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -1724,7 +1724,7 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags) xhci->dcbaa->dev_context_ptrs[0] = cpu_to_le64(xhci->scratchpad->sp_dma); for (i = 0; i < num_sp; i++) { dma_addr_t dma; - void *buf = dma_alloc_coherent(dev, xhci->page_size, &dma, + void *buf = dma_zalloc_coherent(dev, xhci->page_size, &dma, flags); if (!buf) goto fail_sp4; -- 2.13.0