Commit 81604d43 authored by Vasiliy Kulikov's avatar Vasiliy Kulikov Committed by Greg Kroah-Hartman
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staging: comedi: check return code of put_user 



Function put_user may fail. Check for it.

Signed-off-by: default avatarVasiliy Kulikov <segooon@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent b04462a1

drivers/staging/comedi/comedi_fops.c

+2 −1
Original line number Diff line number Diff line
@@ -537,7 +537,8 @@ static int do_chaninfo_ioctl(struct comedi_device *dev, 


			x = (dev->minor << 28) | (it.subdev << 24) | (i << 16) |

			    (s->range_table_list[i]->length);

			put_user(x, it.rangelist + i);

			if (put_user(x, it.rangelist + i))

				return -EFAULT;

		}

#if 0

		if (copy_to_user(it.rangelist, s->range_type_list,