[PATCH 3.11 005/198] mtip32xx: Remove dfs_parent after pci unregister

From: Luis Henriques
Date: Thu Jul 03 2014 - 06:23:59 EST


3.11.10.13 -stable review patch. If anyone has any objections, please let me know.

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

From: Asai Thambi S P <asamymuthupa@xxxxxxxxxx>

commit af5ded8ccf21627f9614afc03b356712666ed225 upstream.

In module exit, dfs_parent and it's subtree were removed before
unregistering with pci. When debugfs entry for each device is attempted
to remove in pci_remove() context, they don't exist, as dfs_parent and
its children were already ripped apart.

Modified to first unregister with pci and then remove dfs_parent.

Signed-off-by: Asai Thambi S P <asamymuthupa@xxxxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxx>
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
---
drivers/block/mtip32xx/mtip32xx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index f394f6d21bd0..6342c2190cca 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -4732,13 +4732,13 @@ static int __init mtip_init(void)
*/
static void __exit mtip_exit(void)
{
- debugfs_remove_recursive(dfs_parent);
-
/* Release the allocated major block device number. */
unregister_blkdev(mtip_major, MTIP_DRV_NAME);

/* Unregister the PCI driver. */
pci_unregister_driver(&mtip_pci_driver);
+
+ debugfs_remove_recursive(dfs_parent);
}

MODULE_AUTHOR("Micron Technology, Inc");
--
1.9.1

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