PCI: use fixed-up device class when configuring device

The device class may be changed after the fixup, so re-read the class value from pci_dev when configuring the device. Otherwise some devices such as JMicron SATA controller won't work. Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Tested-by: Marc Dionne <marc.c.dionne@gmail.com> Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

PCI: use fixed-up device class when configuring device
The device class may be changed after the fixup, so re-read the class value from pci_dev when configuring the device. Otherwise some devices such as JMicron SATA controller won't work. Reviewed-by: Matthew Wilcox <willy@linux.intel.com> Reviewed-by: Grant Grundler <grundler@parisc-linux.org> Tested-by: Marc Dionne <marc.c.dionne@gmail.com> Signed-off-by: Yu Zhao <yu.zhao@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Yu Zhao · Jesse Barnes
1 parent 9fa7eb283c
Showing 1 changed file with 2 additions and 0 deletions Side-by-side Diff
drivers/pci/probe.c
@@ -745,6 +745,8 @@
  
 	/* 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 */
...	...	@@ -745,6 +745,8 @@
745	745
746	746	/* Early fixups, before probing the BARs */
747	747	pci_fixup_device(pci_fixup_early, dev);
	748	+ /* device class may be changed after fixup */
	749	+ class = dev->class >> 8;
748	750
749	751	switch (dev->hdr_type) { /* header type */
750	752	case PCI_HEADER_TYPE_NORMAL: /* standard header */