[PATCH] TIOC* compat ioctl handling

TIOCSTART and TIOCSTOP are defined in asm/ioctls.h and asm/termios.h by
various architectures but not actually implemented anywhere but in the IRIX
compatibility layer, so remove their COMPATIBLE_IOCTL from parisc, ppc64
and sparc64.

Move the TIOCSLTC COMPATIBLE_IOCTL to common code, guided by an ifdef to
only show up on architectures that support it (same as the code handling it
in tty_ioctl.c), aswell as it's brother TIOCGLTC that wasn't handled so
far.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/parisc/kernel/ioctl32.c

@@ -561,11 +561,6 @@ IOCTL_TABLE_START
 #define DECLARES
 #include "compat_ioctl.c"
 
-/* Might be moved to compat_ioctl.h with some ifdefs... */
-COMPATIBLE_IOCTL(TIOCSTART)
-COMPATIBLE_IOCTL(TIOCSTOP)
-COMPATIBLE_IOCTL(TIOCSLTC)
-
 /* PA-specific ioctls */
 COMPATIBLE_IOCTL(PA_PERF_ON)
 COMPATIBLE_IOCTL(PA_PERF_OFF)

arch/ppc64/kernel/ioctl32.c

@@ -39,9 +39,7 @@ IOCTL_TABLE_START
 #include <linux/compat_ioctl.h>
 #define DECLARES
 #include "compat_ioctl.c"
-COMPATIBLE_IOCTL(TIOCSTART)
-COMPATIBLE_IOCTL(TIOCSTOP)
-COMPATIBLE_IOCTL(TIOCSLTC)
+
 /* Little p (/dev/rtc, /dev/envctrl, etc.) */
 COMPATIBLE_IOCTL(_IOR('p', 20, int[7])) /* RTCGET */
 COMPATIBLE_IOCTL(_IOW('p', 21, int[7])) /* RTCSET */

arch/sparc64/kernel/ioctl32.c

@@ -475,9 +475,6 @@ IOCTL_TABLE_START
 #include <linux/compat_ioctl.h>
 #define DECLARES
 #include "compat_ioctl.c"
-COMPATIBLE_IOCTL(TIOCSTART)
-COMPATIBLE_IOCTL(TIOCSTOP)
-COMPATIBLE_IOCTL(TIOCSLTC)
 COMPATIBLE_IOCTL(FBIOGTYPE)
 COMPATIBLE_IOCTL(FBIOSATTR)
 COMPATIBLE_IOCTL(FBIOGATTR)

fs/compat_ioctl.c

@@ -3046,6 +3046,10 @@ HANDLE_IOCTL(RAW_GETBIND, raw_ioctl)
 /* Serial */
 HANDLE_IOCTL(TIOCGSERIAL, serial_struct_ioctl)
 HANDLE_IOCTL(TIOCSSERIAL, serial_struct_ioctl)
+#ifdef TIOCGLTC
+COMPATIBLE_IOCTL(TIOCGLTC)
+COMPATIBLE_IOCTL(TIOCSLTC)
+#endif
 /* Usbdevfs */
 HANDLE_IOCTL(USBDEVFS_CONTROL32, do_usbdevfs_control)
 HANDLE_IOCTL(USBDEVFS_BULK32, do_usbdevfs_bulk)