This is a note to let you know that I've just added the patch titled
floppy: properly handle failure on add_disk loop
to the 3.4-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:
floppy-properly-handle-failure-on-add_disk-loop.patch
and it can be found in the queue-3.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5b4478f5dabb7f764e2fce480b47204e06095a73 Mon Sep 17 00:00:00 2001
From: Herton Ronaldo Krzesinski <herton.krzesinski@xxxxxxxxxxxxx>
Date: Mon, 27 Aug 2012 20:56:54 -0300
Subject: floppy: properly handle failure on add_disk loop
From: Herton Ronaldo Krzesinski <herton.krzesinski@xxxxxxxxxxxxx>
commit d60e7ec18c3fb2cbf90969ccd42889eb2d03aef9 upstream.
On floppy initialization, if something failed inside the loop we call
add_disk, there was no cleanup of previous iterations in the error
handling.
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@xxxxxxxxxxxxx>
Signed-off-by: Jiri Kosina <jkosina@xxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Qiang Huang <h.huangqiang@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/block/floppy.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4306,7 +4306,7 @@ static int __init floppy_init(void)
err = platform_device_register(&floppy_device[drive]);
if (err)
- goto out_flush_work;
+ goto out_remove_drives;
err = device_create_file(&floppy_device[drive].dev,
&dev_attr_cmos);
@@ -4324,6 +4324,15 @@ static int __init floppy_init(void)
out_unreg_platform_dev:
platform_device_unregister(&floppy_device[drive]);
+out_remove_drives:
+ while (drive--) {
+ if ((allowed_drive_mask & (1 << drive)) &&
+ fdc_state[FDC(drive)].version != FDC_NONE) {
+ del_gendisk(disks[drive]);
+ device_remove_file(&floppy_device[drive].dev, &dev_attr_cmos);
+ platform_device_unregister(&floppy_device[drive]);
+ }
+ }
out_flush_work:
flush_work_sync(&floppy_work);
if (atomic_read(&usage_count))
Patches currently in stable-queue which might be from herton.krzesinski@xxxxxxxxxxxxx are
queue-3.4/floppy-properly-handle-failure-on-add_disk-loop.patch
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