rocket: don't let random users reset the controller

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index cbee71bab01..72f289279d8 100644
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -1399,6 +1399,9 @@ static int reset_rm2(struct r_port *info, void __user *arg)
 {
         int reset;
 
+        if (!capable(CAP_SYS_ADMIN))
+                return -EPERM;
+
         if (copy_from_user(&reset, arg, sizeof (int)))
                 return -EFAULT;
         if (reset)