PCI: Fix multiple problems with VIA hardware

This patch is designed to fix:
- Disk eating corruptor on KT7 after resume from RAM
- VIA IRQ handling
- VIA fixups for bus lockups after resume from RAM

The core of this is to add a table of resume fixups run at resume time.
We need to do this for a variety of boards and features, but particularly
we need to do this to get various critical VIA fixups done on resume.

The second part of the problem is to handle VIA IRQ number rules which
are a bit odd and need special handling for PIC interrupts. Various
patches broke various boxes and while this one may not be perfect
(hopefully it is) it ensures the workaround is applied to the right
devices only.

From: Jean Delvare <khali@linux-fr.org>

Now that PCI quirks are replayed on software resume, we can safely
re-enable the Asus SMBus unhiding quirk even when software suspend support
is enabled.

[akpm@osdl.org: fix const warning]
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2 files changed, 22 insertions, 0 deletions

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 1587121..9fcc8d9 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -35,6 +35,9 @@
 		VMLINUX_SYMBOL(__start_pci_fixups_enable) = .;		\
 		*(.pci_fixup_enable)					\
 		VMLINUX_SYMBOL(__end_pci_fixups_enable) = .;		\
+		VMLINUX_SYMBOL(__start_pci_fixups_resume) = .;		\
+		*(.pci_fixup_resume)					\
+		VMLINUX_SYMBOL(__end_pci_fixups_resume) = .;		\
 	}								\
 									\
 	/* RapidIO route ops */						\
diff --git a/include/linux/pci.h b/include/linux/pci.h
index b20ffb6..c1a2bc8 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -396,6 +396,21 @@ struct pci_driver {
  */
 #define pci_module_init	pci_register_driver
 
+/**
+ * PCI_VDEVICE - macro used to describe a specific pci device in short form
+ * @vend: the vendor name
+ * @dev: the 16 bit PCI Device ID
+ *
+ * This macro is used to create a struct pci_device_id that matches a
+ * specific PCI device.  The subvendor, and subdevice fields will be set
+ * to PCI_ANY_ID. The macro allows the next field to follow as the device
+ * private data.
+ */
+
+#define PCI_VDEVICE(vendor, device)		\
+	PCI_VENDOR_ID_##vendor, (device),	\
+	PCI_ANY_ID, PCI_ANY_ID, 0, 0
+
 /* these external functions are only available when PCI support is enabled */
 #ifdef CONFIG_PCI
 
@@ -787,6 +802,7 @@ enum pci_fixup_pass {
 	pci_fixup_header,	/* After reading configuration header */
 	pci_fixup_final,	/* Final phase of device fixups */
 	pci_fixup_enable,	/* pci_enable_device() time */
+	pci_fixup_resume,	/* pci_enable_device() time */
 };
 
 /* Anonymous variables would be nice... */
@@ -805,6 +821,9 @@ enum pci_fixup_pass {
 #define DECLARE_PCI_FIXUP_ENABLE(vendor, device, hook)			\
 	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_enable,			\
 			vendor##device##hook, vendor, device, hook)
+#define DECLARE_PCI_FIXUP_RESUME(vendor, device, hook)			\
+	DECLARE_PCI_FIXUP_SECTION(.pci_fixup_resume,			\
+			resume##vendor##device##hook, vendor, device, hook)
 
 
 void pci_fixup_device(enum pci_fixup_pass pass, struct pci_dev *dev);