4.7-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jens Axboe <axboe@xxxxxx>
commit 468c298ad3ed3f0d94a65f8ca00f6bfc6c2b4e33 upstream.
This reverts commit ff06db1efb2ad6db06eb5b99b88a0c15a9cc9b0e.
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/block/floppy.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3663,6 +3663,11 @@ static int floppy_open(struct block_devi
opened_bdev[drive] = bdev;
+ if (!(mode & (FMODE_READ|FMODE_WRITE))) {
+ res = -EINVAL;
+ goto out;
+ }
+
res = -ENXIO;
if (!floppy_track_buffer) {
@@ -3706,15 +3711,13 @@ static int floppy_open(struct block_devi
if (UFDCS->rawcmd == 1)
UFDCS->rawcmd = 2;
- if (mode & (FMODE_READ|FMODE_WRITE)) {
- UDRS->last_checked = 0;
- clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags);
- check_disk_change(bdev);
- if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags))
- goto out;
- if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags))
- goto out;
- }
+ UDRS->last_checked = 0;
+ clear_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags);
+ check_disk_change(bdev);
+ if (test_bit(FD_DISK_CHANGED_BIT, &UDRS->flags))
+ goto out;
+ if (test_bit(FD_OPEN_SHOULD_FAIL_BIT, &UDRS->flags))
+ goto out;
res = -EROFS;
--
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