From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423011Ab3LFXUj (ORCPT ); Fri, 6 Dec 2013 18:20:39 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:48968 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161188Ab3LFXUf (ORCPT ); Fri, 6 Dec 2013 18:20:35 -0500 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Thomas Pugliese , Greg Kroah-Hartman , Kamal Mostafa Subject: [PATCH 3.8 032/152] usb: wusbcore: change WA_SEGS_MAX to a legal value Date: Fri, 6 Dec 2013 15:09:16 -0800 Message-Id: <1386371476-2477-33-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1386371476-2477-1-git-send-email-kamal@canonical.com> References: <1386371476-2477-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 3.8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.8.13.14 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Pugliese commit f74b75e7f920c700636cccca669c7d16d12e9202 upstream. change WA_SEGS_MAX to a number that is legal according to the WUSB spec. Signed-off-by: Thomas Pugliese Signed-off-by: Greg Kroah-Hartman [ kamal: backport to 3.8 (context) ] Signed-off-by: Kamal Mostafa --- drivers/usb/wusbcore/wa-xfer.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c index 57c01ab..5f6df6e 100644 --- a/drivers/usb/wusbcore/wa-xfer.c +++ b/drivers/usb/wusbcore/wa-xfer.c @@ -90,7 +90,8 @@ #include "wusbhc.h" enum { - WA_SEGS_MAX = 255, + /* [WUSB] section 8.3.3 allocates 7 bits for the segment index. */ + WA_SEGS_MAX = 128, }; enum wa_seg_status { @@ -444,7 +445,7 @@ static ssize_t __wa_xfer_setup_sizes(struct wa_xfer *xfer, xfer->seg_size = (xfer->seg_size / maxpktsize) * maxpktsize; xfer->segs = (urb->transfer_buffer_length + xfer->seg_size - 1) / xfer->seg_size; - if (xfer->segs >= WA_SEGS_MAX) { + if (xfer->segs > WA_SEGS_MAX) { dev_err(dev, "BUG? ops, number of segments %d bigger than %d\n", (int)(urb->transfer_buffer_length / xfer->seg_size), WA_SEGS_MAX); -- 1.8.3.2