diff options
| author | Oliver Neukum <oneukum@suse.de> | 2007-03-19 11:39:13 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-27 13:28:36 -0700 |
| commit | f81ee4d52880b08c213982df5041217212689960 (patch) | |
| tree | bc19b31b57939783234568843a815a8584a1f3d2 | |
| parent | 686149f488e1912f29bcfc593fad4c18f0f75397 (diff) | |
USB: iowarrior.c: fix NULL dereference
Am Montag, 19. 2007 10:25 schrieb Adrian Bunk:
> The Coverity checker spotted the following NULL dereference:
And this fixes an oops upon allocation failures.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/misc/iowarrior.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index d69665c8de0..de97ed7b0b9 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -417,14 +417,14 @@ static ssize_t iowarrior_write(struct file *file, if (!int_out_urb) { retval = -ENOMEM; dbg("%s Unable to allocate urb ", __func__); - goto error; + goto error_no_urb; } buf = usb_buffer_alloc(dev->udev, dev->report_size, GFP_KERNEL, &int_out_urb->transfer_dma); if (!buf) { retval = -ENOMEM; dbg("%s Unable to allocate buffer ", __func__); - goto error; + goto error_no_buffer; } usb_fill_int_urb(int_out_urb, dev->udev, usb_sndintpipe(dev->udev, @@ -459,7 +459,9 @@ static ssize_t iowarrior_write(struct file *file, error: usb_buffer_free(dev->udev, dev->report_size, buf, int_out_urb->transfer_dma); +error_no_buffer: usb_free_urb(int_out_urb); +error_no_urb: atomic_dec(&dev->write_busy); wake_up_interruptible(&dev->write_wait); exit: |