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s390/dasd: fix ioctl return value

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For unimplemented ioctls the dasd driver should return -ENOTTY.

Reported-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Acked-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2012-08-27 10:59:42 +02:00 committed by Martin Schwidefsky
parent cbe05685c1
commit 6b79d14e7a
2 changed files with 3 additions and 6 deletions
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2
drivers/s390/block/dasd_eckd.c
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@ -3804,7 +3804,7 @@ dasd_eckd_ioctl(struct dasd_block *block, unsigned int cmd, void __user *argp)
case BIODASDSYMMIO:
return dasd_symm_io(device, argp);
default:
return -ENOIOCTLCMD;
return -ENOTTY;
}
}

7
drivers/s390/block/dasd_ioctl.c
View File

@ -498,12 +498,9 @@ int dasd_ioctl(struct block_device *bdev, fmode_t mode,
break;
default:
/* if the discipline has an ioctl method try it. */
if (base->discipline->ioctl) {
rc = -ENOTTY;
if (base->discipline->ioctl)
rc = base->discipline->ioctl(block, cmd, argp);
if (rc == -ENOIOCTLCMD)
rc = -EINVAL;
} else
rc = -EINVAL;
}
dasd_put_device(base);
return rc;