Messages in this thread Patch in this message | | | From | Herton Ronaldo Krzesinski <> | Subject | [PATCH 020/241] floppy: properly handle failure on add_disk loop | Date | Thu, 13 Dec 2012 11:56:25 -0200 |
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3.5.7.2 -stable review patch. If anyone has any objections, please let me know.
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From: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
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: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> --- drivers/block/floppy.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/block/floppy.c b/drivers/block/floppy.c index 889f47e..7ad2489 100644 --- a/drivers/block/floppy.c +++ b/drivers/block/floppy.c @@ -4293,7 +4293,7 @@ static int __init floppy_init(void) err = platform_device_register(&floppy_device[drive]); if (err) - goto out_release_dma; + goto out_remove_drives; err = device_create_file(&floppy_device[drive].dev, &dev_attr_cmos); @@ -4311,6 +4311,15 @@ 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_release_dma: if (atomic_read(&usage_count)) floppy_release_irq_and_dma(); -- 1.7.9.5
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