On Fri, Aug 16, 2013 at 10:16:59AM +0300, Dan Carpenter wrote:
> The write_parport_reg_nonblock() function shouldn't sleep because it's
> called with spinlocks held.
Ouch. Thanks for catching this.
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Acked-by: Johan Hovold <jhovold@xxxxxxxxx>
Greg, this one is needed in 3.11 (with a stable tag) as the offending
commit ef6c8c1d ("USB: mos7720: fix broken control requests") is in
usb-3.11-rc6.
Thanks,
Johan
> ---
>
> diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
> index b013001..248fda6 100644
> --- a/drivers/usb/serial/mos7720.c
> +++ b/drivers/usb/serial/mos7720.c
> @@ -374,7 +374,7 @@ static int write_parport_reg_nonblock(struct mos7715_parport *mos_parport,
> kfree(urbtrack);
> return -ENOMEM;
> }
> - urbtrack->setup = kmalloc(sizeof(*urbtrack->setup), GFP_KERNEL);
> + urbtrack->setup = kmalloc(sizeof(*urbtrack->setup), GFP_ATOMIC);
> if (!urbtrack->setup) {
> usb_free_urb(urbtrack->urb);
> kfree(urbtrack);
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