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| author | Johannes Stezenbach <js@sig21.net> | 2011-07-01 22:32:26 +0200 |
|---|---|---|
| committer | Jens Axboe <jaxboe@fusionio.com> | 2011-07-01 22:32:26 +0200 |
| commit | 390192b300570b2bc721d77067ca133f58015ae8 (patch) | |
| tree | bacbd75f23e74308b814146338bcaa6b3636bae7 /block/compat_ioctl.c | |
| parent | 85ef06d1d252f6a2e73b678591ab71caad4667bb (diff) | |
| download | linux-3.10-390192b300570b2bc721d77067ca133f58015ae8.tar.gz linux-3.10-390192b300570b2bc721d77067ca133f58015ae8.tar.bz2 linux-3.10-390192b300570b2bc721d77067ca133f58015ae8.zip | |
compat_ioctl: fix warning caused by qemu
On Linux x86_64 host with 32bit userspace, running
qemu or even just "qemu-img create -f qcow2 some.img 1G"
causes a kernel warning:
ioctl32(qemu-img:5296): Unknown cmd fd(3) cmd(00005326){t:'S';sz:0} arg(7fffffff) on some.img
ioctl32(qemu-img:5296): Unknown cmd fd(3) cmd(801c0204){t:02;sz:28} arg(fff77350) on some.img
ioctl 00005326 is CDROM_DRIVE_STATUS,
ioctl 801c0204 is FDGETPRM.
The warning appears because the Linux compat-ioctl handler for these
ioctls only applies to block devices, while qemu also uses the ioctls on
plain files.
Signed-off-by: Johannes Stezenbach <js@sig21.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Diffstat (limited to 'block/compat_ioctl.c')
| -rw-r--r-- | block/compat_ioctl.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c index cc3eb78e333..7b725020823 100644 --- a/block/compat_ioctl.c +++ b/block/compat_ioctl.c @@ -208,19 +208,6 @@ static int compat_blkpg_ioctl(struct block_device *bdev, fmode_t mode, #define BLKBSZSET_32 _IOW(0x12, 113, int) #define BLKGETSIZE64_32 _IOR(0x12, 114, int) -struct compat_floppy_struct { - compat_uint_t size; - compat_uint_t sect; - compat_uint_t head; - compat_uint_t track; - compat_uint_t stretch; - unsigned char gap; - unsigned char rate; - unsigned char spec1; - unsigned char fmt_gap; - const compat_caddr_t name; -}; - struct compat_floppy_drive_params { char cmos; compat_ulong_t max_dtr; @@ -288,7 +275,6 @@ struct compat_floppy_write_errors { #define FDSETPRM32 _IOW(2, 0x42, struct compat_floppy_struct) #define FDDEFPRM32 _IOW(2, 0x43, struct compat_floppy_struct) -#define FDGETPRM32 _IOR(2, 0x04, struct compat_floppy_struct) #define FDSETDRVPRM32 _IOW(2, 0x90, struct compat_floppy_drive_params) #define FDGETDRVPRM32 _IOR(2, 0x11, struct compat_floppy_drive_params) #define FDGETDRVSTAT32 _IOR(2, 0x12, struct compat_floppy_drive_struct) |