compat_ioctl: ide: floppy: add handler
Rather than relying on fs/compat_ioctl.c, this adds support
for a compat_ioctl() callback in the ide-floppy driver directly,
which lets it translate the scsi commands.
Reviewed-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/drivers/ide/ide-gd.c b/drivers/ide/ide-gd.c
index dba9ad5..1bb99b5 100644
--- a/drivers/ide/ide-gd.c
+++ b/drivers/ide/ide-gd.c
@@ -341,11 +341,28 @@ static int ide_gd_ioctl(struct block_device *bdev, fmode_t mode,
return drive->disk_ops->ioctl(drive, bdev, mode, cmd, arg);
}
+#ifdef CONFIG_COMPAT
+static int ide_gd_compat_ioctl(struct block_device *bdev, fmode_t mode,
+ unsigned int cmd, unsigned long arg)
+{
+ struct ide_disk_obj *idkp = ide_drv_g(bdev->bd_disk, ide_disk_obj);
+ ide_drive_t *drive = idkp->drive;
+
+ if (!drive->disk_ops->compat_ioctl)
+ return -ENOIOCTLCMD;
+
+ return drive->disk_ops->compat_ioctl(drive, bdev, mode, cmd, arg);
+}
+#endif
+
static const struct block_device_operations ide_gd_ops = {
.owner = THIS_MODULE,
.open = ide_gd_unlocked_open,
.release = ide_gd_release,
.ioctl = ide_gd_ioctl,
+#ifdef CONFIG_COMPAT
+ .ioctl = ide_gd_compat_ioctl,
+#endif
.getgeo = ide_gd_getgeo,
.check_events = ide_gd_check_events,
.unlock_native_capacity = ide_gd_unlock_native_capacity,