Commit f81ee4d5 authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman

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: default avatarOliver Neukum <oneukum@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 686149f4
......@@ -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:
......
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