On Sun, May 29, 2011 at 10:53:12PM +0300, Dan Carpenter wrote: > copy_to_user() returns the number of bytes remaining, but we want a > negative error code here. > > Signed-off-by: Dan Carpenter <error27@xxxxxxxxx> > > diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c > index a8d03ae..93fa22d 100644 > --- a/drivers/ptp/ptp_chardev.c > +++ b/drivers/ptp/ptp_chardev.c > @@ -46,7 +46,8 @@ long ptp_ioctl(struct posix_clock *pc, unsigned int cmd, unsigned long arg) > caps.n_ext_ts = ptp->info->n_ext_ts; > caps.n_per_out = ptp->info->n_per_out; > caps.pps = ptp->info->pps; > - err = copy_to_user((void __user *)arg, &caps, sizeof(caps)); > + if (copy_to_user((void __user *)arg, &caps, sizeof(caps))) > + err = -EFAULT; Yes, right, and thanks for the extra review. Thomas, can you please queue these two patches for 3.0-rc2? (Or should John Stultz handle this sort of thing?) Thanks, Richard -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
