Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: only save/restore existent registers in the PCIe capability
  x86/PCI: don't bother with root quirks if _CRS is used
  docbooks: add/fix PCI kernel-doc
  PCI: cleanup debug output resources
  x86/PCI: set_pci_bus_resources_arch_default cleanups
  x86/PCI: Move set_pci_bus_resources_arch_default into arch/x86
  x86/PCI: don't call e820_all_mapped with -1 in the mmconfig case
  PCI quirk: disable MSI on VIA VT3364 chipsets

8 files changed, 74 insertions, 30 deletions

diff --git a/drivers/pci/access.c b/drivers/pci/access.c
index 64dd7df90e6..0f370651268 100644
--- a/drivers/pci/access.c
+++ b/drivers/pci/access.c
@@ -87,8 +87,8 @@ EXPORT_SYMBOL(pci_read_vpd);
  * pci_write_vpd - Write entry to Vital Product Data
  * @dev:	pci device struct
  * @pos:	offset in vpd space
- * @count:	number of bytes to read
- * @val:	value to write
+ * @count:	number of bytes to write
+ * @buf:	buffer containing write data
  *
  */
 ssize_t pci_write_vpd(struct pci_dev *dev, loff_t pos, size_t count, const void *buf)
diff --git a/drivers/pci/htirq.c b/drivers/pci/htirq.c
index bf7d6ce9bbb..6808d8333ec 100644
--- a/drivers/pci/htirq.c
+++ b/drivers/pci/htirq.c
@@ -158,6 +158,7 @@ int ht_create_irq(struct pci_dev *dev, int idx)
 
 /**
  * ht_destroy_irq - destroy an irq created with ht_create_irq
+ * @irq: irq to be destroyed
  *
  * This reverses ht_create_irq removing the specified irq from
  * existence.  The irq should be free before this happens.
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index a7eb1b46a5a..85ebd02a64a 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -492,6 +492,7 @@ write_vpd_attr(struct kobject *kobj, struct bin_attribute *bin_attr,
 /**
  * pci_read_legacy_io - read byte(s) from legacy I/O port space
  * @kobj: kobject corresponding to file to read from
+ * @bin_attr: struct bin_attribute for this file
  * @buf: buffer to store results
  * @off: offset into legacy I/O port space
  * @count: number of bytes to read
@@ -517,6 +518,7 @@ pci_read_legacy_io(struct kobject *kobj, struct bin_attribute *bin_attr,
 /**
  * pci_write_legacy_io - write byte(s) to legacy I/O port space
  * @kobj: kobject corresponding to file to read from
+ * @bin_attr: struct bin_attribute for this file
  * @buf: buffer containing value to be written
  * @off: offset into legacy I/O port space
  * @count: number of bytes to write
@@ -733,9 +735,9 @@ pci_mmap_resource_wc(struct kobject *kobj, struct bin_attribute *attr,
 
 /**
  * pci_remove_resource_files - cleanup resource files
- * @dev: dev to cleanup
+ * @pdev: dev to cleanup
  *
- * If we created resource files for @dev, remove them from sysfs and
+ * If we created resource files for @pdev, remove them from sysfs and
  * free their resources.
  */
 static void
@@ -793,9 +795,9 @@ static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
 
 /**
  * pci_create_resource_files - create resource files in sysfs for @dev
- * @dev: dev in question
+ * @pdev: dev in question
  *
- * Walk the resources in @dev creating files for each resource available.
+ * Walk the resources in @pdev creating files for each resource available.
  */
 static int pci_create_resource_files(struct pci_dev *pdev)
 {
@@ -829,6 +831,7 @@ void __weak pci_remove_resource_files(struct pci_dev *dev) { return; }
 /**
  * pci_write_rom - used to enable access to the PCI ROM display
  * @kobj: kernel object handle
+ * @bin_attr: struct bin_attribute for this file
  * @buf: user input
  * @off: file offset
  * @count: number of byte in input
@@ -852,6 +855,7 @@ pci_write_rom(struct kobject *kobj, struct bin_attribute *bin_attr,
 /**
  * pci_read_rom - read a PCI ROM
  * @kobj: kernel object handle
+ * @bin_attr: struct bin_attribute for this file
  * @buf: where to put the data we read from the ROM
  * @off: file offset
  * @count: number of bytes to read
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 16fd0d4c316..34bf0fdf504 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -681,11 +681,34 @@ EXPORT_SYMBOL(pci_choose_state);
 
 #define PCI_EXP_SAVE_REGS	7
 
+#define pcie_cap_has_devctl(type, flags)	1
+#define pcie_cap_has_lnkctl(type, flags)		\
+		((flags & PCI_EXP_FLAGS_VERS) > 1 ||	\
+		 (type == PCI_EXP_TYPE_ROOT_PORT ||	\
+		  type == PCI_EXP_TYPE_ENDPOINT ||	\
+		  type == PCI_EXP_TYPE_LEG_END))
+#define pcie_cap_has_sltctl(type, flags)		\
+		((flags & PCI_EXP_FLAGS_VERS) > 1 ||	\
+		 ((type == PCI_EXP_TYPE_ROOT_PORT) ||	\
+		  (type == PCI_EXP_TYPE_DOWNSTREAM &&	\
+		   (flags & PCI_EXP_FLAGS_SLOT))))
+#define pcie_cap_has_rtctl(type, flags)			\
+		((flags & PCI_EXP_FLAGS_VERS) > 1 ||	\
+		 (type == PCI_EXP_TYPE_ROOT_PORT ||	\
+		  type == PCI_EXP_TYPE_RC_EC))
+#define pcie_cap_has_devctl2(type, flags)		\
+		((flags & PCI_EXP_FLAGS_VERS) > 1)
+#define pcie_cap_has_lnkctl2(type, flags)		\
+		((flags & PCI_EXP_FLAGS_VERS) > 1)
+#define pcie_cap_has_sltctl2(type, flags)		\
+		((flags & PCI_EXP_FLAGS_VERS) > 1)
+
 static int pci_save_pcie_state(struct pci_dev *dev)
 {
 	int pos, i = 0;
 	struct pci_cap_saved_state *save_state;
 	u16 *cap;
+	u16 flags;
 
 	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
 	if (pos <= 0)
@@ -698,13 +721,22 @@ static int pci_save_pcie_state(struct pci_dev *dev)
 	}
 	cap = (u16 *)&save_state->data[0];
 
-	pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &cap[i++]);
-	pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &cap[i++]);
-	pci_read_config_word(dev, pos + PCI_EXP_SLTCTL, &cap[i++]);
-	pci_read_config_word(dev, pos + PCI_EXP_RTCTL, &cap[i++]);
-	pci_read_config_word(dev, pos + PCI_EXP_DEVCTL2, &cap[i++]);
-	pci_read_config_word(dev, pos + PCI_EXP_LNKCTL2, &cap[i++]);
-	pci_read_config_word(dev, pos + PCI_EXP_SLTCTL2, &cap[i++]);
+	pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags);
+
+	if (pcie_cap_has_devctl(dev->pcie_type, flags))
+		pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &cap[i++]);
+	if (pcie_cap_has_lnkctl(dev->pcie_type, flags))
+		pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &cap[i++]);
+	if (pcie_cap_has_sltctl(dev->pcie_type, flags))
+		pci_read_config_word(dev, pos + PCI_EXP_SLTCTL, &cap[i++]);
+	if (pcie_cap_has_rtctl(dev->pcie_type, flags))
+		pci_read_config_word(dev, pos + PCI_EXP_RTCTL, &cap[i++]);
+	if (pcie_cap_has_devctl2(dev->pcie_type, flags))
+		pci_read_config_word(dev, pos + PCI_EXP_DEVCTL2, &cap[i++]);
+	if (pcie_cap_has_lnkctl2(dev->pcie_type, flags))
+		pci_read_config_word(dev, pos + PCI_EXP_LNKCTL2, &cap[i++]);
+	if (pcie_cap_has_sltctl2(dev->pcie_type, flags))
+		pci_read_config_word(dev, pos + PCI_EXP_SLTCTL2, &cap[i++]);
 
 	return 0;
 }
@@ -714,6 +746,7 @@ static void pci_restore_pcie_state(struct pci_dev *dev)
 	int i = 0, pos;
 	struct pci_cap_saved_state *save_state;
 	u16 *cap;
+	u16 flags;
 
 	save_state = pci_find_saved_cap(dev, PCI_CAP_ID_EXP);
 	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
@@ -721,13 +754,22 @@ static void pci_restore_pcie_state(struct pci_dev *dev)
 		return;
 	cap = (u16 *)&save_state->data[0];
 
-	pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, cap[i++]);
-	pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, cap[i++]);
-	pci_write_config_word(dev, pos + PCI_EXP_SLTCTL, cap[i++]);
-	pci_write_config_word(dev, pos + PCI_EXP_RTCTL, cap[i++]);
-	pci_write_config_word(dev, pos + PCI_EXP_DEVCTL2, cap[i++]);
-	pci_write_config_word(dev, pos + PCI_EXP_LNKCTL2, cap[i++]);
-	pci_write_config_word(dev, pos + PCI_EXP_SLTCTL2, cap[i++]);
+	pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags);
+
+	if (pcie_cap_has_devctl(dev->pcie_type, flags))
+		pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, cap[i++]);
+	if (pcie_cap_has_lnkctl(dev->pcie_type, flags))
+		pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, cap[i++]);
+	if (pcie_cap_has_sltctl(dev->pcie_type, flags))
+		pci_write_config_word(dev, pos + PCI_EXP_SLTCTL, cap[i++]);
+	if (pcie_cap_has_rtctl(dev->pcie_type, flags))
+		pci_write_config_word(dev, pos + PCI_EXP_RTCTL, cap[i++]);
+	if (pcie_cap_has_devctl2(dev->pcie_type, flags))
+		pci_write_config_word(dev, pos + PCI_EXP_DEVCTL2, cap[i++]);
+	if (pcie_cap_has_lnkctl2(dev->pcie_type, flags))
+		pci_write_config_word(dev, pos + PCI_EXP_LNKCTL2, cap[i++]);
+	if (pcie_cap_has_sltctl2(dev->pcie_type, flags))
+		pci_write_config_word(dev, pos + PCI_EXP_SLTCTL2, cap[i++]);
 }
 
 
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 8eb50dffb78..e3c3e081b83 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1118,10 +1118,6 @@ unsigned int __devinit pci_scan_child_bus(struct pci_bus *bus)
 	return max;
 }
 
-void __attribute__((weak)) set_pci_bus_resources_arch_default(struct pci_bus *b)
-{
-}
-
 struct pci_bus * pci_create_bus(struct device *parent,
 		int bus, struct pci_ops *ops, void *sysdata)
 {
@@ -1180,8 +1176,6 @@ struct pci_bus * pci_create_bus(struct device *parent,
 	b->resource[0] = &ioport_resource;
 	b->resource[1] = &iomem_resource;
 
-	set_pci_bus_resources_arch_default(b);
-
 	return b;
 
 dev_create_file_err:
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 0254741bece..3067673d54f 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -2033,6 +2033,7 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS400_200, quirk_di
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RS480, quirk_disable_all_msi);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3336, quirk_disable_all_msi);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disable_all_msi);
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
 
 /* Disable MSI on chipsets that are known to not support it */
 static void __devinit quirk_disable_msi(struct pci_dev *dev)
diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index 8d9da9d30a6..a00f85471b6 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -536,11 +536,13 @@ static void pci_bus_dump_res(struct pci_bus *bus)
 
         for (i = 0; i < PCI_BUS_NUM_RESOURCES; i++) {
                 struct resource *res = bus->resource[i];
-                if (!res)
+                if (!res || !res->end)
                         continue;
 
 		dev_printk(KERN_DEBUG, &bus->dev, "resource %d %s %pR\n", i,
-			   (res->flags & IORESOURCE_IO) ? "io: " : "mem:", res);
+			   (res->flags & IORESOURCE_IO) ? "io: " :
+			    ((res->flags & IORESOURCE_PREFETCH)? "pref mem":"mem:"),
+			   res);
         }
 }
 
diff --git a/drivers/pci/slot.c b/drivers/pci/slot.c
index 21189447e54..fe95ce20bcb 100644
--- a/drivers/pci/slot.c
+++ b/drivers/pci/slot.c
@@ -264,8 +264,8 @@ EXPORT_SYMBOL_GPL(pci_create_slot);
 
 /**
  * pci_renumber_slot - update %struct pci_slot -> number
- * @slot - %struct pci_slot to update
- * @slot_nr - new number for slot
+ * @slot: &struct pci_slot to update
+ * @slot_nr: new number for slot
  *
  * The primary purpose of this interface is to allow callers who earlier
  * created a placeholder slot in pci_create_slot() by passing a -1 as