linux-kernel - [PATCH 2/4] rsxx: Removing IDA on driver unload.

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Message-ID: <20130806211058.GC4939@oc6784271780.ibm.com>
Date:	Tue, 6 Aug 2013 16:10:58 -0500
From:	"Philip J. Kelleher" <pjk1939@...ux.vnet.ibm.com>
To:	axboe@...nel.dk
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] rsxx: Removing IDA on driver unload.

From: Philip J Kelleher <pjk1939@...ux.vnet.ibm.com>

The rsxx driver was not releasing the IDA entry during
driver unload. This would be a big problem on a DLPAR
remove where the card is remove from the LPAR but the
driver is still loaded. This patch fixes that issue.

Signed-off-by: Philip J Kelleher <pjk1939@...ux.vnet.ibm.com>
-------------------------------------------------------------------------------

diff -uprN -X linux-block-vanilla/Documentation/dontdiff linux-block-vanilla/drivers/block/rsxx/core.c linux-block/drivers/block/rsxx/core.c
--- linux-block-vanilla/drivers/block/rsxx/core.c	2013-07-23 10:11:20.943772116 -0500
+++ linux-block/drivers/block/rsxx/core.c	2013-07-23 10:14:50.402462948 -0500
@@ -1105,6 +1105,10 @@ static void rsxx_pci_remove(struct pci_d
 	pci_disable_device(dev);
 	pci_release_regions(dev);

+	spin_lock(&rsxx_ida_lock);
+	ida_remove(&rsxx_disk_ida, card->disk_id);
+	spin_unlock(&rsxx_ida_lock);
+
 	kfree(card);
 }

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