[PATCH] isdn4linux: Siemens Gigaset drivers: eliminate from_user argument

[firefly-linux-kernel-4.4.55.git] / drivers / isdn / gigaset / interface.c

diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
index f3dce8c4831b5933161134b44b90de5bcd900cfc..25750864d206be390d65f6c1799ca4c69fce42e2 100644 (file)
--- a/drivers/isdn/gigaset/interface.c
+++ b/drivers/isdn/gigaset/interface.c
@@ -246,8 +246,6 @@ static int if_ioctl(struct tty_struct *tty, struct file *file,
                        break;
                case GIGASET_BRKCHARS:
                        //FIXME test if MS_LOCKED
-                       gigaset_dbg_buffer(DEBUG_IF, "GIGASET_BRKCHARS",
-                                          6, (const unsigned char *) arg, 1);
                        if (!atomic_read(&cs->connected)) {
                                gig_dbg(DEBUG_ANY,
                                    "can't communicate with unplugged device");
@@ -257,8 +255,11 @@ static int if_ioctl(struct tty_struct *tty, struct file *file,
                        retval = copy_from_user(&buf,
                                        (const unsigned char __user *) arg, 6)
                                ? -EFAULT : 0;
-                       if (retval >= 0)
+                       if (retval >= 0) {
+                               gigaset_dbg_buffer(DEBUG_IF, "GIGASET_BRKCHARS",
+                                               6, (const unsigned char *) arg);
                                retval = cs->ops->brkchars(cs, buf);
+                       }
                        break;
                case GIGASET_VERSION:
                        retval = copy_from_user(version,