linux-kernel - [PATCH 03/17] hpsa: enable bus master bit after pci_enable

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Date:	Tue, 01 May 2012 11:42:20 -0500
From:	"Stephen M. Cameron" <scameron@...rdog.cce.hp.com>
To:	james.bottomley@...senpartnership.com
Cc:	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	stephenmcameron@...il.com, thenzl@...hat.com,
	akpm@...ux-foundation.org, mikem@...rdog.cce.hp.com
Subject: [PATCH 03/17] hpsa: enable bus master bit after pci_enable_device

From: Stephen M. Cameron <scameron@...rdog.cce.hp.com>

pci_disable_device() disables the bus master bit and pci_enable_device does
not re-enable it.  It needs to be enabled.

Signed-off-by: Stephen M. Cameron <scameron@...rdog.cce.hp.com>
---
 drivers/scsi/hpsa.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 5119ce6..de9c8f3 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -3933,6 +3933,9 @@ static int __devinit hpsa_pci_init(struct ctlr_info *h)
 		return err;
 	}
 
+	/* Enable bus mastering (pci_disable_device may disable this) */
+	pci_set_master(h->pdev);
+
 	err = pci_request_regions(h->pdev, HPSA);
 	if (err) {
 		dev_err(&h->pdev->dev,

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