Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755343AbcD0Arq (ORCPT ); Tue, 26 Apr 2016 20:47:46 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:39579 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753072AbcDZXN1 (ORCPT ); Tue, 26 Apr 2016 19:13:27 -0400 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Oliver Neukum" , "Greg Kroah-Hartman" , "Oliver Neukum" Date: Wed, 27 Apr 2016 01:02:24 +0200 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.2 019/115] usb: hub: fix a typo in hub_port_init() leading to wrong logic In-Reply-To: X-SA-Exim-Connect-IP: 2a02:8426:ae4:c500:9cba:69ae:962d:6167 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2450 Lines: 66 3.2.80-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Oliver Neukum commit 0d5ce778c43bf888328231bcdce05d5c860655aa upstream. A typo of j for i led to a logic bug. To rule out future confusion, the variable names are made meaningful. Signed-off-by: Oliver Neukum Signed-off-by: Greg Kroah-Hartman [bwh: Backported to 3.2: adjust context] Signed-off-by: Ben Hutchings --- drivers/usb/core/hub.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3033,7 +3033,7 @@ hub_port_init (struct usb_hub *hub, stru struct usb_device *hdev = hub->hdev; struct usb_hcd *hcd = bus_to_hcd(hdev->bus); - int i, j, retval; + int retries, operations, retval, i; unsigned delay = HUB_SHORT_RESET_TIME; enum usb_device_speed oldspeed = udev->speed; const char *speed; @@ -3135,7 +3135,7 @@ hub_port_init (struct usb_hub *hub, stru * first 8 bytes of the device descriptor to get the ep0 maxpacket * value. */ - for (i = 0; i < GET_DESCRIPTOR_TRIES; (++i, msleep(100))) { + for (retries = 0; retries < GET_DESCRIPTOR_TRIES; (++retries, msleep(100))) { if (USE_NEW_SCHEME(retry_counter) && !(hcd->driver->flags & HCD_USB3)) { struct usb_device_descriptor *buf; int r = 0; @@ -3151,7 +3151,7 @@ hub_port_init (struct usb_hub *hub, stru * 255 is for WUSB devices, we actually need to use * 512 (WUSB1.0[4.8.1]). */ - for (j = 0; j < 3; ++j) { + for (operations = 0; operations < 3; ++operations) { buf->bMaxPacketSize0 = 0; r = usb_control_msg(udev, usb_rcvaddr0pipe(), USB_REQ_GET_DESCRIPTOR, USB_DIR_IN, @@ -3177,7 +3177,7 @@ hub_port_init (struct usb_hub *hub, stru * reset. But only on the first attempt, * lest we get into a time out/reset loop */ - if (r == 0 || (r == -ETIMEDOUT && j == 0)) + if (r == 0 || (r == -ETIMEDOUT && retries == 0)) break; } udev->descriptor.bMaxPacketSize0 = @@ -3209,7 +3209,7 @@ hub_port_init (struct usb_hub *hub, stru * authorization will assign the final address. */ if (udev->wusb == 0) { - for (j = 0; j < SET_ADDRESS_TRIES; ++j) { + for (operations = 0; operations < SET_ADDRESS_TRIES; ++operations) { retval = hub_set_address(udev, devnum); if (retval >= 0) break;