From 5e5740524c3c8c4127d6e0eab62c619f6650e017 Mon Sep 17 00:00:00 2001 From: Stephane Grosjean Date: Fri, 28 Nov 2014 13:49:10 +0100 Subject: [PATCH] can: peak_usb: fix cleanup sequence order in case of error during init 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 Signed-off-by: Marc Kleine-Budde Signed-off-by: Greg Kroah-Hartman --- drivers/net/can/usb/peak_usb/pcan_usb_core.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_core.c b/drivers/net/can/usb/peak_usb/pcan_usb_core.c index a0f647f92bf5..3a220d2f2ee1 100644 --- 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 peak_usb_adapter *peak_usb_adapter, 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 peak_usb_adapter *peak_usb_adapter, 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 peak_usb_adapter *peak_usb_adapter, 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 peak_usb_adapter *peak_usb_adapter, 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; -- 2.34.1