[PATCH v2 06/10] block/swim: Don't log an error message for an invalid ioctl
From: Finn Thain
Date: Wed Apr 11 2018 - 20:51:48 EST
The 'eject' shell command may send various different ioctl commands.
This leads to error messages on the console even though the FDEJECT
ioctl succeeds.
~# eject floppy
SWIM floppy_ioctl: unknown cmd 21257
SWIM floppy_ioctl: unknown cmd 1
Don't log an error message for an invalid ioctl, just do as the
swim3 driver does and return -ENOTTY.
Cc: Laurent Vivier <lvivier@xxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx # v4.14+
Tested-by: Stan Johnson <userm57@xxxxxxxxx>
Signed-off-by: Finn Thain <fthain@xxxxxxxxxxxxxxxxxxx>
Acked-by: Laurent Vivier <lvivier@xxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
---
drivers/block/swim.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index 0258a96e0c46..7b847170cf71 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -727,14 +727,9 @@ static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
if (copy_to_user((void __user *) param, (void *) &floppy_type,
sizeof(struct floppy_struct)))
return -EFAULT;
- break;
-
- default:
- printk(KERN_DEBUG "SWIM floppy_ioctl: unknown cmd %d\n",
- cmd);
- return -ENOSYS;
+ return 0;
}
- return 0;
+ return -ENOTTY;
}
static int floppy_getgeo(struct block_device *bdev, struct hd_geometry *geo)
--
2.16.1