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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2010-01-10 23:29:16 +0900
committerGreg Kroah-Hartman <gregkh@suse.de>2010-01-20 15:03:26 -0800
commit3f00171125384b46e5088b7d7a5d0b3e6972f1ee (patch)
treed806f7ac7b189192459645fd4cbda5120fa11f90 /fs/compat_ioctl.c
parent24bc7347da73a9ed3383056c3d0f28c0e361621e (diff)
downloadlinux-3f00171125384b46e5088b7d7a5d0b3e6972f1ee.tar.gz
compat_ioctl: Supress "unknown cmd" message on serial /dev/console
After the commit fb07a5f8 ("compat_ioctl: remove all VT ioctl handling"), I got this error message on 64-bit mips kernel with 32-bit busybox userland: ioctl32(init:1): Unknown cmd fd(0) cmd(00005600){t:'V';sz:0} arg(7fd76480) on /dev/console The cmd 5600 is VT_OPENQRY. The busybox's init issues this ioctl to know vt-console or serial-console. If the console was serial console, VT ioctls are not handled by the serial driver. And by quick search, I found some programs using VT_GETMODE to check vt-console is available or not. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/compat_ioctl.c')
-rw-r--r--fs/compat_ioctl.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 332dd00f089..c5c45de1a2e 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -1005,6 +1005,9 @@ COMPATIBLE_IOCTL(SCSI_IOCTL_SEND_COMMAND)
COMPATIBLE_IOCTL(SCSI_IOCTL_PROBE_HOST)
COMPATIBLE_IOCTL(SCSI_IOCTL_GET_PCI)
#endif
+/* Big V (don't complain on serial console) */
+IGNORE_IOCTL(VT_OPENQRY)
+IGNORE_IOCTL(VT_GETMODE)
/* Little p (/dev/rtc, /dev/envctrl, etc.) */
COMPATIBLE_IOCTL(RTC_AIE_ON)
COMPATIBLE_IOCTL(RTC_AIE_OFF)