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-rw-r--r--fs/compat_ioctl.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index c68b055fa26..c5a4f5459a0 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -2396,6 +2396,14 @@ lp_timeout_trans(unsigned int fd, unsigned int cmd, unsigned long arg)
#define ULONG_IOCTL(cmd) \
{ (cmd), (ioctl_trans_handler_t)sys_ioctl },
+/* ioctl should not be warned about even if it's not implemented.
+ Valid reasons to use this:
+ - It is implemented with ->compat_ioctl on some device, but programs
+ call it on others too.
+ - The ioctl is not implemented in the native kernel, but programs
+ call it commonly anyways.
+ Most other reasons are not valid. */
+#define IGNORE_IOCTL(cmd) COMPATIBLE_IOCTL(cmd)
struct ioctl_trans ioctl_start[] = {
#include <linux/compat_ioctl.h>