linux-kernel - [233/244] [SCSI] aacraid: reset should disable MSI interrupt

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Message-Id: <20110928220149.944962765@clark.kroah.org>
Date:	Wed, 28 Sep 2011 15:03:17 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Vasily Averin <vvs@...ru>,
	Mark Salyzyn <mark_salyzyn@...xyratex.com>,
	James Bottomley <JBottomley@...allels.com>
Subject: [233/244] [SCSI] aacraid: reset should disable MSI interrupt

3.0-stable review patch.  If anyone has any objections, please let us know.

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

From: Vasily Averin <vvs@...allels.com>

commit d0efab26f89506387a1bde898556660e06d7eb15 upstream.

scsi reset on hardware with enabled MSI interrupts generates WARNING message

[11027.798722] aacraid: Host adapter abort request (0,0,0,0)
[11027.798814] aacraid: Host adapter reset request. SCSI hang ?
[11087.762237] aacraid: SCSI bus appears hung
[11135.082543] ------------[ cut here ]------------
[11135.082646] WARNING: at drivers/pci/msi.c:658 pci_enable_msi_block+0x251/0x290()

Signed-off-by: Vasily Averin <vvs@...ru>
Acked-by: Mark Salyzyn <mark_salyzyn@...xyratex.com>
Signed-off-by: James Bottomley <JBottomley@...allels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/scsi/aacraid/commsup.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -1283,6 +1283,8 @@ static int _aac_reset_adapter(struct aac
 	kfree(aac->queues);
 	aac->queues = NULL;
 	free_irq(aac->pdev->irq, aac);
+	if (aac->msi)
+		pci_disable_msi(aac->pdev);
 	kfree(aac->fsa_dev);
 	aac->fsa_dev = NULL;
 	quirks = aac_get_driver_ident(index)->quirks;


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