Char: mxser, ratelimit ioctl warning

The GET_MAJOR ioctl prints out a warning, make it ratelimited.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index e30575e87648d4efa42b18e444732820281ff71e..b638403e8e9c870af1d37cec1a44d5ffd54ae14f 100644 (file)
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -1612,8 +1612,10 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
 
        switch (cmd) {
        case MOXA_GET_MAJOR:
-               printk(KERN_WARNING "mxser: '%s' uses deprecated ioctl %x, fix "
-                               "your userspace\n", current->comm, cmd);
+               if (printk_ratelimit())
+                       printk(KERN_WARNING "mxser: '%s' uses deprecated ioctl "
+                                       "%x (GET_MAJOR), fix your userspace\n",
+                                       current->comm, cmd);
                return put_user(ttymajor, (int __user *)argp);
 
        case MOXA_CHKPORTENABLE: