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[3.16.y-ckt,stable] Patch "can: peak_usb: fix memset() usage" has been added to staging queue

Message ID 1420626614-26230-1-git-send-email-luis.henriques@canonical.com
State New
Headers show

Commit Message

Luis Henriques Jan. 7, 2015, 10:30 a.m. UTC
This is a note to let you know that I have just added a patch titled

    can: peak_usb: fix memset() usage

to the linux-3.16.y-queue branch of the 3.16.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.16.y-queue

This patch is scheduled to be released in version 3.16.7-ckt4.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.16.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

From 376c357810bef045676d00323b046bc83c5eb60b Mon Sep 17 00:00:00 2001
From: Stephane Grosjean <s.grosjean@peak-system.com>
Date: Fri, 28 Nov 2014 14:08:48 +0100
Subject: can: peak_usb: fix memset() usage

commit dc50ddcd4c58a5a0226038307d6ef884bec9f8c2 upstream.

This patchs fixes a misplaced call to memset() that fills the request
buffer with 0. The problem was with sending PCAN_USBPRO_REQ_FCT
requests, the content set by the caller was thus lost.

With this patch, the memory area is zeroed only when requesting info
from the device.

Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
 drivers/net/can/usb/peak_usb/pcan_usb_pro.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--
2.1.4
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Patch

diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
index 263dd921edc4..f7f796a2c50b 100644
--- a/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_pro.c
@@ -333,8 +333,6 @@  static int pcan_usb_pro_send_req(struct peak_usb_device *dev, int req_id,
 	if (!(dev->state & PCAN_USB_STATE_CONNECTED))
 		return 0;

-	memset(req_addr, '\0', req_size);
-
 	req_type = USB_TYPE_VENDOR | USB_RECIP_OTHER;

 	switch (req_id) {
@@ -345,6 +343,7 @@  static int pcan_usb_pro_send_req(struct peak_usb_device *dev, int req_id,
 	default:
 		p = usb_rcvctrlpipe(dev->udev, 0);
 		req_type |= USB_DIR_IN;
+		memset(req_addr, '\0', req_size);
 		break;
 	}