[PATCH 4/6] floppy: properly handle failure on add_disk loop
From: Herton Ronaldo Krzesinski
Date: Mon Aug 27 2012 - 19:57:50 EST
On floppy initialization, if something failed inside the loop we call
add_disk, there was no cleanup of previous iterations in the error
handling.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@xxxxxxxxxxxxx>
---
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 32551f2..2197c88 100644
--- a/drivers/block/floppy.c
+++ b/drivers/block/floppy.c
@@ -4293,7 +4293,7 @@ static int __init do_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 do_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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