This is a note to let you know that I've just added the patch titled
can: peak_usb: fix cleanup sequence order in case of error during init
to the 3.10-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:
can-peak_usb-fix-cleanup-sequence-order-in-case-of-error-during-init.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From af35d0f1cce7a990286e2b94c260a2c2d2a0e4b0 Mon Sep 17 00:00:00 2001
From: Stephane Grosjean <s.grosjean@xxxxxxxxxxxxxxx>
Date: Fri, 28 Nov 2014 13:49:10 +0100
Subject: can: peak_usb: fix cleanup sequence order in case of error during init
From: Stephane Grosjean <s.grosjean@xxxxxxxxxxxxxxx>
commit af35d0f1cce7a990286e2b94c260a2c2d2a0e4b0 upstream.
This patch sets the correct reverse sequence order to the instructions
set to run, when any failure occurs during the initialization steps.
It also adds the missing unregistration call of the can device if the
failure appears after having been registered.
Signed-off-by: Stephane Grosjean <s.grosjean@xxxxxxxxxxxxxxx>
Signed-off-by: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/can/usb/peak_usb/pcan_usb_core.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)
--- a/drivers/net/can/usb/peak_usb/pcan_usb_core.c
+++ b/drivers/net/can/usb/peak_usb/pcan_usb_core.c
@@ -727,7 +727,7 @@ static int peak_usb_create_dev(struct pe
dev->cmd_buf = kmalloc(PCAN_USB_MAX_CMD_LEN, GFP_KERNEL);
if (!dev->cmd_buf) {
err = -ENOMEM;
- goto lbl_set_intf_data;
+ goto lbl_free_candev;
}
dev->udev = usb_dev;
@@ -766,7 +766,7 @@ static int peak_usb_create_dev(struct pe
err = register_candev(netdev);
if (err) {
dev_err(&intf->dev, "couldn't register CAN device: %d\n", err);
- goto lbl_free_cmd_buf;
+ goto lbl_restore_intf_data;
}
if (dev->prev_siblings)
@@ -779,14 +779,14 @@ static int peak_usb_create_dev(struct pe
if (dev->adapter->dev_init) {
err = dev->adapter->dev_init(dev);
if (err)
- goto lbl_free_cmd_buf;
+ goto lbl_unregister_candev;
}
/* set bus off */
if (dev->adapter->dev_set_bus) {
err = dev->adapter->dev_set_bus(dev, 0);
if (err)
- goto lbl_free_cmd_buf;
+ goto lbl_unregister_candev;
}
/* get device number early */
@@ -798,11 +798,14 @@ static int peak_usb_create_dev(struct pe
return 0;
-lbl_free_cmd_buf:
- kfree(dev->cmd_buf);
+lbl_unregister_candev:
+ unregister_candev(netdev);
-lbl_set_intf_data:
+lbl_restore_intf_data:
usb_set_intfdata(intf, dev->prev_siblings);
+ kfree(dev->cmd_buf);
+
+lbl_free_candev:
free_candev(netdev);
return err;
Patches currently in stable-queue which might be from s.grosjean@xxxxxxxxxxxxxxx are
queue-3.10/can-peak_usb-fix-memset-usage.patch
queue-3.10/can-peak_usb-fix-cleanup-sequence-order-in-case-of-error-during-init.patch
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