Patch "Revert "floppy: fix open(O_ACCMODE) for ioctl-only open"" has been added to the 4.7-stable tree

Patch "Revert "floppy: fix open(O_ACCMODE) for ioctl-only open"" has been added to the 4.7-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    Revert "floppy: fix open(O_ACCMODE) for ioctl-only open"

to the 4.7-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     revert-floppy-fix-open-o_accmode-for-ioctl-only-open.patch
and it can be found in the queue-4.7 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 468c298ad3ed3f0d94a65f8ca00f6bfc6c2b4e33 Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@fb.com>
Date: Thu, 25 Aug 2016 08:56:44 -0600
Subject: Revert "floppy: fix open(O_ACCMODE) for ioctl-only open"

From: Jens Axboe <axboe@fb.com>

commit 468c298ad3ed3f0d94a65f8ca00f6bfc6c2b4e33 upstream.

This reverts commit ff06db1efb2ad6db06eb5b99b88a0c15a9cc9b0e.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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;
 


Patches currently in stable-queue which might be from axboe@fb.com are

queue-4.7/genirq-msi-remove-unused-msi_flag_identity_map.patch
queue-4.7/revert-floppy-fix-open-o_accmode-for-ioctl-only-open.patch