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Message-ID: <15F501D1A78BD343BE8F4D8DB854566B13CD8F45@hkemmail01.nvidia.com>
Date:	Tue, 15 May 2007 14:22:42 +0800
From:	"Peer Chen" <pchen@...dia.com>
To:	<linux-kernel@...r.kernel.org>
Cc:	<jeff@...zik.org>, <akpm@...ux-foundation.org>
Subject: [PATCH] drivers/ata: correct a wrong free function for sata_nv driver

For sata_nv driver in kernel 2.6.21 onward, Inside nv_init_one(),use
'hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);' but
using the kfree(hpriv) to free that data struction in nv_remove_one(),
which will cause system hang when removing the sata_nv module.

Change the 'kfree()' function to 'devm_kfree' will fix this bug.

The patch base on kernel 2.6.22-rc1.

Signed-off-by: Peer Chen <pchen@...dia.com>
=====================================
--- linux-2.6.22-rc1/drivers/ata/sata_nv.c.orig
+++ linux-2.6.22-rc1/drivers/ata/sata_nv.c
@@ -1619,7 +1619,7 @@ static void nv_remove_one (struct pci_de
 	struct nv_host_priv *hpriv = host->private_data;
 
 	ata_pci_remove_one(pdev);
-	kfree(hpriv);
+	devm_kfree(&pci_dev->dev, hpriv);
 }
 
 #ifdef CONFIG_PM
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