USB: Fix unload oops and memory leak in yealink driver
This patch fixes a memory leak and a kernel oops when trying to unload
the driver, due to an unbalanced cleanup.
Thanks Ivar Jensen for spotting my mistake.
Signed-off-by: Henk Vergonet <henk.vergonet@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/input/yealink.c b/drivers/usb/input/yealink.c
index 575a4e6..7b45fd3 100644
--- a/drivers/usb/input/yealink.c
+++ b/drivers/usb/input/yealink.c
@@ -810,12 +810,9 @@
if (yld == NULL)
return err;
- if (yld->urb_irq) {
- usb_kill_urb(yld->urb_irq);
- usb_free_urb(yld->urb_irq);
- }
- if (yld->urb_ctl)
- usb_free_urb(yld->urb_ctl);
+ usb_kill_urb(yld->urb_irq); /* parameter validation in core/urb */
+ usb_kill_urb(yld->urb_ctl); /* parameter validation in core/urb */
+
if (yld->idev) {
if (err)
input_free_device(yld->idev);
@@ -831,6 +828,9 @@
if (yld->irq_data)
usb_buffer_free(yld->udev, USB_PKT_LEN,
yld->irq_data, yld->irq_dma);
+
+ usb_free_urb(yld->urb_irq); /* parameter validation in core/urb */
+ usb_free_urb(yld->urb_ctl); /* parameter validation in core/urb */
kfree(yld);
return err;
}
