Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit e23ef227 authored May 29, 2011 by Dan Carpenter Committed by John Stultz Jun 01, 2011

ptp: Return -EFAULT on copy_to_user() errors



copy_to_user() returns the number of bytes remaining, but we want a
negative error code in ptp_ioctl.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: John Stultz <john.stultz@linaro.org>

parent 1fa7b6a2

drivers/ptp/ptp_chardev.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -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;
		break;

		case PTP_EXTTS_REQUEST: