linux-kernel - [PATCH] PCI: use fixed-up device class when configuring device

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Message-Id: <1243441505-5477-1-git-send-email-yu.zhao@intel.com>
Date:	Thu, 28 May 2009 00:25:05 +0800
From:	Yu Zhao <yu.zhao@...el.com>
To:	jbarnes@...tuousgeek.org
Cc:	linux-pci@...r.kernel.org, marc.c.dionne@...il.com,
	linux-kernel@...r.kernel.org, Yu Zhao <yu.zhao@...el.com>
Subject: [PATCH] PCI: use fixed-up device class when configuring device

The device class may be changed after the early fixup. Need to
re-read the class value from pci_dev when configuring the device.
Otherwise some devices such as JMicron SATA controller won't work.

Tested-by: Marc Dionne <marc.c.dionne@...il.com>
Signed-off-by: Yu Zhao <yu.zhao@...el.com>
---
 drivers/pci/probe.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index e3c3e08..f1ae247 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -745,6 +745,8 @@ int pci_setup_device(struct pci_dev *dev)
 
 	/* Early fixups, before probing the BARs */
 	pci_fixup_device(pci_fixup_early, dev);
+	/* device class may be changed after fixup */
+	class = dev->class >> 8;
 
 	switch (dev->hdr_type) {		    /* header type */
 	case PCI_HEADER_TYPE_NORMAL:		    /* standard header */
-- 
1.6.1

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