lkml.org 
[lkml]   [2016]   [Sep]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.7 01/59] Revert "floppy: refactor open() flags handling"
Date
4.7-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jens Axboe <axboe@fb.com>

commit f2791e7eadf437633f30faa51b30878cf15650be upstream.

This reverts commit 09954bad448791ef01202351d437abdd9497a804.

Cc: Mark Hounschell <markh@compro.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/block/floppy.c | 34 +++++++++++++++-------------------
1 file changed, 15 insertions(+), 19 deletions(-)

--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -3663,11 +3663,6 @@ 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) {
@@ -3711,20 +3706,21 @@ static int floppy_open(struct block_devi
if (UFDCS->rawcmd == 1)
UFDCS->rawcmd = 2;

- 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;
-
- if ((mode & FMODE_WRITE) &&
- !test_bit(FD_DISK_WRITABLE_BIT, &UDRS->flags))
- goto out;
-
+ if (!(mode & FMODE_NDELAY)) {
+ 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;
+ }
+ res = -EROFS;
+ if ((mode & FMODE_WRITE) &&
+ !test_bit(FD_DISK_WRITABLE_BIT, &UDRS->flags))
+ goto out;
+ }
mutex_unlock(&open_lock);
mutex_unlock(&floppy_mutex);
return 0;

\
 
 \ /
  Last update: 2016-09-17 09:59    [W:0.042 / U:2.124 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site