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: remove unused resource assignment in pci_read_bridge_bases()
  PCI hotplug: shpchp: message refinement
  PCI hotplug: shpchp: replace printk with dev_printk
  PCI: add routines for debugging and handling lost interrupts
  PCI hotplug: pciehp: message refinement
  PCI: fix ARI code to be compatible with mixed ARI/non-ARI systems
  PCI hotplug: cpqphp: fix kernel NULL pointer dereference

drivers/pci/Makefile

@@ -3,7 +3,8 @@
 #
 
 obj-y		+= access.o bus.o probe.o remove.o pci.o quirks.o slot.o \
-			pci-driver.o search.o pci-sysfs.o rom.o setup-res.o
+			pci-driver.o search.o pci-sysfs.o rom.o setup-res.o \
+			irq.o
 obj-$(CONFIG_PROC_FS) += proc.o
 
 # Build PCI Express stuff if needed

drivers/pci/hotplug/cpqphp_core.c

@@ -433,7 +433,7 @@ static int ctrl_slot_setup(struct controller *ctrl,
 				slot->number, ctrl->slot_device_offset,
 				slot_number);
 		result = pci_hp_register(hotplug_slot,
-					 ctrl->pci_dev->subordinate,
+					 ctrl->pci_dev->bus,
 					 slot->device,
 					 name);
 		if (result) {

drivers/pci/hotplug/pciehp.h

@@ -188,7 +188,7 @@ static inline struct slot *pciehp_find_slot(struct controller *ctrl, u8 device)
 			return slot;
 	}
 
-	ctrl_err(ctrl, "%s: slot (device=0x%x) not found\n", __func__, device);
+	ctrl_err(ctrl, "Slot (device=0x%02x) not found\n", device);
 	return NULL;
 }
 

drivers/pci/hotplug/pciehp_core.c

@@ -184,7 +184,7 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, hotplug_slot_name(hotplug_slot));
 
 	kfree(hotplug_slot->info);
@@ -216,9 +216,11 @@ static int init_slots(struct controller *ctrl)
 		slot->hotplug_slot = hotplug_slot;
 		snprintf(name, SLOT_NAME_SIZE, "%u", slot->number);
 
-		ctrl_dbg(ctrl, "Registering bus=%x dev=%x hp_slot=%x sun=%x "
-			 "slot_device_offset=%x\n", slot->bus, slot->device,
-			 slot->hp_slot, slot->number, ctrl->slot_device_offset);
+ 		ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:%02x "
+ 			 "hp_slot=%x sun=%x slot_device_offset=%x\n",
+ 			 pci_domain_nr(ctrl->pci_dev->subordinate),
+ 			 slot->bus, slot->device, slot->hp_slot, slot->number,
+ 			 ctrl->slot_device_offset);
 		retval = pci_hp_register(hotplug_slot,
 					 ctrl->pci_dev->subordinate,
 					 slot->device,
@@ -238,7 +240,7 @@ static int init_slots(struct controller *ctrl)
 				&hotplug_slot_attr_lock.attr);
 			if (retval) {
 				pci_hp_deregister(hotplug_slot);
-				ctrl_err(ctrl, "cannot create additional sysfs "
+				ctrl_err(ctrl, "Cannot create additional sysfs "
 					 "entries\n");
 				goto error_info;
 			}
@@ -273,7 +275,7 @@ static int set_attention_status(struct hotplug_slot *hotplug_slot, u8 status)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		  __func__, slot_name(slot));
 
 	hotplug_slot->info->attention_status = status;
@@ -289,7 +291,7 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, slot_name(slot));
 
 	return pciehp_sysfs_enable_slot(slot);
@@ -300,7 +302,7 @@ static int disable_slot(struct hotplug_slot *hotplug_slot)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		  __func__, slot_name(slot));
 
 	return pciehp_sysfs_disable_slot(slot);
@@ -311,7 +313,7 @@ static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
 	struct slot *slot = hotplug_slot->private;
 	int retval;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		  __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_power_status(slot, value);
@@ -326,7 +328,7 @@ static int get_attention_status(struct hotplug_slot *hotplug_slot, u8 *value)
 	struct slot *slot = hotplug_slot->private;
 	int retval;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		  __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_attention_status(slot, value);
@@ -341,7 +343,7 @@ static int get_latch_status(struct hotplug_slot *hotplug_slot, u8 *value)
 	struct slot *slot = hotplug_slot->private;
 	int retval;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_latch_status(slot, value);
@@ -356,7 +358,7 @@ static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
 	struct slot *slot = hotplug_slot->private;
 	int retval;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_adapter_status(slot, value);
@@ -372,7 +374,7 @@ static int get_max_bus_speed(struct hotplug_slot *hotplug_slot,
 	struct slot *slot = hotplug_slot->private;
 	int retval;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_max_bus_speed(slot, value);
@@ -387,7 +389,7 @@ static int get_cur_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_spe
 	struct slot *slot = hotplug_slot->private;
 	int retval;
 
-	ctrl_dbg(slot->ctrl, "%s - physical_slot = %s\n",
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
 		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
@@ -414,7 +416,7 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 
 	ctrl = pcie_init(dev);
 	if (!ctrl) {
-		dev_err(&dev->device, "controller initialization failed\n");
+		dev_err(&dev->device, "Controller initialization failed\n");
 		goto err_out_none;
 	}
 	set_service_data(dev, ctrl);
@@ -423,10 +425,10 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	rc = init_slots(ctrl);
 	if (rc) {
 		if (rc == -EBUSY)
-			ctrl_warn(ctrl, "slot already registered by another "
+			ctrl_warn(ctrl, "Slot already registered by another "
 				  "hotplug driver\n");
 		else
-			ctrl_err(ctrl, "slot initialization failed\n");
+			ctrl_err(ctrl, "Slot initialization failed\n");
 		goto err_out_release_ctlr;
 	}
 
@@ -523,7 +525,7 @@ static int __init pcied_init(void)
  	dbg("pcie_port_service_register = %d\n", retval);
   	info(DRIVER_DESC " version: " DRIVER_VERSION "\n");
  	if (retval)
-		dbg("%s: Failure to register service\n", __func__);
+		dbg("Failure to register service\n");
 	return retval;
 }
 

drivers/pci/hotplug/pciehp_ctrl.c

@@ -61,7 +61,7 @@ u8 pciehp_handle_attention_button(struct slot *p_slot)
 	struct controller *ctrl = p_slot->ctrl;
 
 	/* Attention Button Change */
-	ctrl_dbg(ctrl, "Attention button interrupt received.\n");
+	ctrl_dbg(ctrl, "Attention button interrupt received\n");
 
 	/*
 	 *  Button pressed - See if need to TAKE ACTION!!!
@@ -81,7 +81,7 @@ u8 pciehp_handle_switch_change(struct slot *p_slot)
 	struct controller *ctrl = p_slot->ctrl;
 
 	/* Switch Change */
-	ctrl_dbg(ctrl, "Switch interrupt received.\n");
+	ctrl_dbg(ctrl, "Switch interrupt received\n");
 
 	p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 	if (getstatus) {
@@ -110,7 +110,7 @@ u8 pciehp_handle_presence_change(struct slot *p_slot)
 	struct controller *ctrl = p_slot->ctrl;
 
 	/* Presence Change */
-	ctrl_dbg(ctrl, "Presence/Notify input change.\n");
+	ctrl_dbg(ctrl, "Presence/Notify input change\n");
 
 	/* Switch is open, assume a presence change
 	 * Save the presence state
@@ -142,7 +142,7 @@ u8 pciehp_handle_power_fault(struct slot *p_slot)
 	struct controller *ctrl = p_slot->ctrl;
 
 	/* power fault */
-	ctrl_dbg(ctrl, "Power fault interrupt received.\n");
+	ctrl_dbg(ctrl, "Power fault interrupt received\n");
 
 	if ( !(p_slot->hpc_ops->query_power_fault(p_slot))) {
 		/*
@@ -157,7 +157,7 @@ u8 pciehp_handle_power_fault(struct slot *p_slot)
 		 */
 		ctrl_info(ctrl, "Power fault on Slot(%s)\n", slot_name(p_slot));
 		event_type = INT_POWER_FAULT;
-		ctrl_info(ctrl, "power fault bit %x set\n", 0);
+		ctrl_info(ctrl, "Power fault bit %x set\n", 0);
 	}
 
 	queue_interrupt_event(p_slot, event_type);
@@ -175,8 +175,7 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 	if (POWER_CTRL(ctrl)) {
 		if (pslot->hpc_ops->power_off_slot(pslot)) {
 			ctrl_err(ctrl,
-				 "%s: Issue of Slot Power Off command failed\n",
-				 __func__);
+				 "Issue of Slot Power Off command failed\n");
 			return;
 		}
 	}
@@ -193,8 +192,8 @@ static void set_slot_off(struct controller *ctrl, struct slot * pslot)
 
 	if (ATTN_LED(ctrl)) {
 		if (pslot->hpc_ops->set_attention_status(pslot, 1)) {
-			ctrl_err(ctrl, "%s: Issue of Set Attention "
-				 "Led command failed\n", __func__);
+			ctrl_err(ctrl,
+				 "Issue of Set Attention Led command failed\n");
 			return;
 		}
 	}
@@ -211,8 +210,9 @@ static int board_added(struct slot *p_slot)
 {
 	int retval = 0;
 	struct controller *ctrl = p_slot->ctrl;
+	struct pci_bus *parent = ctrl->pci_dev->subordinate;
 
-	ctrl_dbg(ctrl, "%s: slot device, slot offset, hp slot = %d, %d ,%d\n",
+	ctrl_dbg(ctrl, "%s: slot device, slot offset, hp slot = %d, %d, %d\n",
 		 __func__, p_slot->device, ctrl->slot_device_offset,
 		 p_slot->hp_slot);
 
@@ -229,22 +229,22 @@ static int board_added(struct slot *p_slot)
 	/* Check link training status */
 	retval = p_slot->hpc_ops->check_lnk_status(ctrl);
 	if (retval) {
-		ctrl_err(ctrl, "%s: Failed to check link status\n", __func__);
+		ctrl_err(ctrl, "Failed to check link status\n");
 		set_slot_off(ctrl, p_slot);
 		return retval;
 	}
 
 	/* Check for a power fault */
 	if (p_slot->hpc_ops->query_power_fault(p_slot)) {
-		ctrl_dbg(ctrl, "%s: power fault detected\n", __func__);
+		ctrl_dbg(ctrl, "Power fault detected\n");
 		retval = POWER_FAILURE;
 		goto err_exit;
 	}
 
 	retval = pciehp_configure_device(p_slot);
 	if (retval) {
-		ctrl_err(ctrl, "Cannot add device 0x%x:%x\n",
-			 p_slot->bus, p_slot->device);
+		ctrl_err(ctrl, "Cannot add device at %04x:%02x:%02x\n",
+			 pci_domain_nr(parent), p_slot->bus, p_slot->device);
 		goto err_exit;
 	}
 
@@ -276,14 +276,14 @@ static int remove_board(struct slot *p_slot)
 	if (retval)
 		return retval;
 
-	ctrl_dbg(ctrl, "In %s, hp_slot = %d\n", __func__, p_slot->hp_slot);
+	ctrl_dbg(ctrl, "%s: hp_slot = %d\n", __func__, p_slot->hp_slot);
 
 	if (POWER_CTRL(ctrl)) {
 		/* power off slot */
 		retval = p_slot->hpc_ops->power_off_slot(p_slot);
 		if (retval) {
-			ctrl_err(ctrl, "%s: Issue of Slot Disable command "
-				 "failed\n", __func__);
+			ctrl_err(ctrl,
+				 "Issue of Slot Disable command failed\n");
 			return retval;
 		}
 	}
@@ -324,8 +324,10 @@ static void pciehp_power_thread(struct work_struct *work)
 	switch (p_slot->state) {
 	case POWEROFF_STATE:
 		mutex_unlock(&p_slot->lock);
-		ctrl_dbg(p_slot->ctrl, "%s: disabling bus:device(%x:%x)\n",
-			 __func__, p_slot->bus, p_slot->device);
+		ctrl_dbg(p_slot->ctrl,
+			 "Disabling domain:bus:device=%04x:%02x:%02x\n",
+			 pci_domain_nr(p_slot->ctrl->pci_dev->subordinate),
+			 p_slot->bus, p_slot->device);
 		pciehp_disable_slot(p_slot);
 		mutex_lock(&p_slot->lock);
 		p_slot->state = STATIC_STATE;
@@ -433,7 +435,6 @@ static void handle_button_press_event(struct slot *p_slot)
 		 * expires to cancel hot-add or hot-remove
 		 */
 		ctrl_info(ctrl, "Button cancel on Slot(%s)\n", slot_name(p_slot));
-		ctrl_dbg(ctrl, "%s: button cancel\n", __func__);
 		cancel_delayed_work(&p_slot->work);
 		if (p_slot->state == BLINKINGOFF_STATE) {
 			if (PWR_LED(ctrl))
@@ -537,16 +538,15 @@ int pciehp_enable_slot(struct slot *p_slot)
 
 	rc = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
 	if (rc || !getstatus) {
-		ctrl_info(ctrl, "%s: no adapter on slot(%s)\n",
-			  __func__, slot_name(p_slot));
+		ctrl_info(ctrl, "No adapter on slot(%s)\n", slot_name(p_slot));
 		mutex_unlock(&p_slot->ctrl->crit_sect);
 		return -ENODEV;
 	}
 	if (MRL_SENS(p_slot->ctrl)) {
 		rc = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 		if (rc || getstatus) {
-			ctrl_info(ctrl, "%s: latch open on slot(%s)\n",
-				  __func__, slot_name(p_slot));
+			ctrl_info(ctrl, "Latch open on slot(%s)\n",
+				  slot_name(p_slot));
 			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return -ENODEV;
 		}
@@ -555,8 +555,8 @@ int pciehp_enable_slot(struct slot *p_slot)
 	if (POWER_CTRL(p_slot->ctrl)) {
 		rc = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
 		if (rc || getstatus) {
-			ctrl_info(ctrl, "%s: already enabled on slot(%s)\n",
-				  __func__, slot_name(p_slot));
+			ctrl_info(ctrl, "Already enabled on slot(%s)\n",
+				  slot_name(p_slot));
 			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return -EINVAL;
 		}
@@ -591,8 +591,8 @@ int pciehp_disable_slot(struct slot *p_slot)
 	if (!HP_SUPR_RM(p_slot->ctrl)) {
 		ret = p_slot->hpc_ops->get_adapter_status(p_slot, &getstatus);
 		if (ret || !getstatus) {
-			ctrl_info(ctrl, "%s: no adapter on slot(%s)\n",
-				  __func__, slot_name(p_slot));
+			ctrl_info(ctrl, "No adapter on slot(%s)\n",
+				  slot_name(p_slot));
 			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return -ENODEV;
 		}
@@ -601,8 +601,8 @@ int pciehp_disable_slot(struct slot *p_slot)
 	if (MRL_SENS(p_slot->ctrl)) {
 		ret = p_slot->hpc_ops->get_latch_status(p_slot, &getstatus);
 		if (ret || getstatus) {
-			ctrl_info(ctrl, "%s: latch open on slot(%s)\n",
-				  __func__, slot_name(p_slot));
+			ctrl_info(ctrl, "Latch open on slot(%s)\n",
+				  slot_name(p_slot));
 			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return -ENODEV;
 		}
@@ -611,8 +611,8 @@ int pciehp_disable_slot(struct slot *p_slot)
 	if (POWER_CTRL(p_slot->ctrl)) {
 		ret = p_slot->hpc_ops->get_power_status(p_slot, &getstatus);
 		if (ret || !getstatus) {
-			ctrl_info(ctrl, "%s: already disabled slot(%s)\n",
-				  __func__, slot_name(p_slot));
+			ctrl_info(ctrl, "Already disabled on slot(%s)\n",
+				  slot_name(p_slot));
 			mutex_unlock(&p_slot->ctrl->crit_sect);
 			return -EINVAL;
 		}

drivers/pci/hotplug/pciehp_hpc.c

@@ -316,22 +316,19 @@ static int pcie_write_cmd(struct controller *ctrl, u16 cmd, u16 mask)
 			 * proceed forward to issue the next command according
 			 * to spec. Just print out the error message.
 			 */
-			ctrl_dbg(ctrl,
-				 "%s: CMD_COMPLETED not clear after 1 sec.\n",
-				 __func__);
+			ctrl_dbg(ctrl, "CMD_COMPLETED not clear after 1 sec\n");
 		} else if (!NO_CMD_CMPL(ctrl)) {
 			/*
 			 * This controller semms to notify of command completed
 			 * event even though it supports none of power
 			 * controller, attention led, power led and EMI.
 			 */
-			ctrl_dbg(ctrl, "%s: Unexpected CMD_COMPLETED. Need to "
-				 "wait for command completed event.\n",
-				 __func__);
+			ctrl_dbg(ctrl, "Unexpected CMD_COMPLETED. Need to "
+				 "wait for command completed event.\n");
 			ctrl->no_cmd_complete = 0;
 		} else {
-			ctrl_dbg(ctrl, "%s: Unexpected CMD_COMPLETED. Maybe "
-				 "the controller is broken.\n", __func__);
+			ctrl_dbg(ctrl, "Unexpected CMD_COMPLETED. Maybe "
+				 "the controller is broken.\n");
 		}
 	}
 
@@ -347,8 +344,7 @@ static int pcie_write_cmd(struct controller *ctrl, u16 cmd, u16 mask)
 	smp_mb();
 	retval = pciehp_writew(ctrl, SLOTCTRL, slot_ctrl);
 	if (retval)
-		ctrl_err(ctrl, "%s: Cannot write to SLOTCTRL register\n",
-			 __func__);
+		ctrl_err(ctrl, "Cannot write to SLOTCTRL register\n");
 
 	/*
 	 * Wait for command completion.
@@ -418,15 +414,14 @@ static int hpc_check_lnk_status(struct controller *ctrl)
 
 	retval = pciehp_readw(ctrl, LNKSTATUS, &lnk_status);
 	if (retval) {
-		ctrl_err(ctrl, "%s: Cannot read LNKSTATUS register\n",
-			 __func__);
+		ctrl_err(ctrl, "Cannot read LNKSTATUS register\n");
 		return retval;
 	}
 
 	ctrl_dbg(ctrl, "%s: lnk_status = %x\n", __func__, lnk_status);
 	if ( (lnk_status & LNK_TRN) || (lnk_status & LNK_TRN_ERR) ||
 		!(lnk_status & NEG_LINK_WD)) {
-		ctrl_err(ctrl, "%s : Link Training Error occurs \n", __func__);
+		ctrl_err(ctrl, "Link Training Error occurs \n");
 		retval = -1;
 		return retval;
 	}
@@ -551,7 +546,7 @@ static int hpc_query_power_fault(struct slot *slot)
 
 	retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
 	if (retval) {
-		ctrl_err(ctrl, "%s: Cannot check for power fault\n", __func__);
+		ctrl_err(ctrl, "Cannot check for power fault\n");
 		return retval;
 	}
 	pwr_fault = (u8)((slot_status & PWR_FAULT_DETECTED) >> 1);
@@ -567,7 +562,7 @@ static int hpc_get_emi_status(struct slot *slot, u8 *status)
 
 	retval = pciehp_readw(ctrl, SLOTSTATUS, &slot_status);
 	if (retval) {
-		ctrl_err(ctrl, "%s : Cannot check EMI status\n", __func__);
+		ctrl_err(ctrl, "Cannot check EMI status\n");
 		return retval;
 	}
 	*status = (slot_status & EMI_STATE) >> EMI_STATUS_BIT;
@@ -697,8 +692,7 @@ static int hpc_power_on_slot(struct slot * slot)
 	retval = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
 
 	if (retval) {
-		ctrl_err(ctrl, "%s: Write %x command failed!\n",
-			 __func__, slot_cmd);
+		ctrl_err(ctrl, "Write %x command failed!\n", slot_cmd);
 		return -1;
 	}
 	ctrl_dbg(ctrl, "%s: SLOTCTRL %x write cmd %x\n",
@@ -776,7 +770,7 @@ static int hpc_power_off_slot(struct slot * slot)
 
 	retval = pcie_write_cmd(ctrl, slot_cmd, cmd_mask);
 	if (retval) {
-		ctrl_err(ctrl, "%s: Write command failed!\n", __func__);
+		ctrl_err(ctrl, "Write command failed!\n");
 		retval = -1;
 		goto out;
 	}
@@ -1056,8 +1050,7 @@ int pcie_enable_notification(struct controller *ctrl)
 	       PWR_FAULT_DETECT_ENABLE | HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE;
 
 	if (pcie_write_cmd(ctrl, cmd, mask)) {
-		ctrl_err(ctrl, "%s: Cannot enable software notification\n",
-			 __func__);
+		ctrl_err(ctrl, "Cannot enable software notification\n");
 		return -1;
 	}
 	return 0;
@@ -1069,8 +1062,7 @@ static void pcie_disable_notification(struct controller *ctrl)
 	mask = PRSN_DETECT_ENABLE | ATTN_BUTTN_ENABLE | MRL_DETECT_ENABLE |
 	       PWR_FAULT_DETECT_ENABLE | HP_INTR_ENABLE | CMD_CMPL_INTR_ENABLE;
 	if (pcie_write_cmd(ctrl, 0, mask))
-		ctrl_warn(ctrl, "%s: Cannot disable software notification\n",
-			  __func__);
+		ctrl_warn(ctrl, "Cannot disable software notification\n");
 }
 
 static int pcie_init_notification(struct controller *ctrl)
@@ -1179,7 +1171,7 @@ struct controller *pcie_init(struct pcie_device *dev)
 
 	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
 	if (!ctrl) {
-		dev_err(&dev->device, "%s : out of memory\n", __func__);
+		dev_err(&dev->device, "%s: Out of memory\n", __func__);
 		goto abort;
 	}
 	INIT_LIST_HEAD(&ctrl->slot_list);
@@ -1188,12 +1180,11 @@ struct controller *pcie_init(struct pcie_device *dev)
 	ctrl->pci_dev = pdev;
 	ctrl->cap_base = pci_find_capability(pdev, PCI_CAP_ID_EXP);
 	if (!ctrl->cap_base) {
-		ctrl_err(ctrl, "%s: Cannot find PCI Express capability\n",
-			 __func__);
+		ctrl_err(ctrl, "Cannot find PCI Express capability\n");
 		goto abort_ctrl;
 	}
 	if (pciehp_readl(ctrl, SLOTCAP, &slot_cap)) {
-		ctrl_err(ctrl, "%s: Cannot read SLOTCAP register\n", __func__);
+		ctrl_err(ctrl, "Cannot read SLOTCAP register\n");
 		goto abort_ctrl;
 	}
 

drivers/pci/hotplug/pciehp_pci.c

@@ -39,8 +39,7 @@ static void program_hpp_type0(struct pci_dev *dev, struct hpp_type0 *hpp)
 	u16 pci_cmd, pci_bctl;
 
 	if (hpp->revision > 1) {
-		printk(KERN_WARNING "%s: Rev.%d type0 record not supported\n",
-		       __func__, hpp->revision);
+		warn("Rev.%d type0 record not supported\n", hpp->revision);
 		return;
 	}
 
@@ -81,8 +80,7 @@ static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp)
 	u32 reg32;
 
 	if (hpp->revision > 1) {
-		printk(KERN_WARNING "%s: Rev.%d type2 record not supported\n",
-		       __func__, hpp->revision);
+		warn("Rev.%d type2 record not supported\n", hpp->revision);
 		return;
 	}
 
@@ -149,8 +147,7 @@ static void program_fw_provided_values(struct pci_dev *dev)
 		return;
 
 	if (pciehp_get_hp_params_from_firmware(dev, &hpp)) {
-		printk(KERN_WARNING "%s: Could not get hotplug parameters\n",
-		       __func__);
+		warn("Could not get hotplug parameters\n");
 		return;
 	}
 
@@ -202,9 +199,9 @@ int pciehp_configure_device(struct slot *p_slot)
 
 	dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 0));
 	if (dev) {
-		ctrl_err(ctrl,
-			 "Device %s already exists at %x:%x, cannot hot-add\n",
-			 pci_name(dev), p_slot->bus, p_slot->device);
+		ctrl_err(ctrl, "Device %s already exists "
+			 "at %04x:%02x:%02x, cannot hot-add\n", pci_name(dev),
+			 pci_domain_nr(parent), p_slot->bus, p_slot->device);
 		pci_dev_put(dev);
 		return -EINVAL;
 	}
@@ -248,8 +245,8 @@ int pciehp_unconfigure_device(struct slot *p_slot)
 	u16 command;
 	struct controller *ctrl = p_slot->ctrl;
 
-	ctrl_dbg(ctrl, "%s: bus/dev = %x/%x\n", __func__,
-		 p_slot->bus, p_slot->device);
+	ctrl_dbg(ctrl, "%s: domain:bus:dev = %04x:%02x:%02x\n",
+		 __func__, pci_domain_nr(parent), p_slot->bus, p_slot->device);
 	ret = p_slot->hpc_ops->get_adapter_status(p_slot, &presence);
 	if (ret)
 		presence = 0;

drivers/pci/hotplug/shpchp.h

@@ -59,6 +59,20 @@ extern struct workqueue_struct *shpchp_wq;
 #define warn(format, arg...)						\
 	printk(KERN_WARNING "%s: " format, MY_NAME , ## arg)
 
+#define ctrl_dbg(ctrl, format, arg...)					\
+	do {								\
+		if (shpchp_debug)					\
+			dev_printk(, &ctrl->pci_dev->dev,		\
+					format, ## arg);		\
+	} while (0)
+#define ctrl_err(ctrl, format, arg...)					\
+	dev_err(&ctrl->pci_dev->dev, format, ## arg)
+#define ctrl_info(ctrl, format, arg...)					\
+	dev_info(&ctrl->pci_dev->dev, format, ## arg)
+#define ctrl_warn(ctrl, format, arg...)					\
+	dev_warn(&ctrl->pci_dev->dev, format, ## arg)
+
+
 #define SLOT_NAME_SIZE 10
 struct slot {
 	u8 bus;
@@ -239,7 +253,7 @@ static inline struct slot *shpchp_find_slot(struct controller *ctrl, u8 device)
 			return slot;
 	}
 
-	err("%s: slot (device=0x%x) not found\n", __func__, device);
+	ctrl_err(ctrl, "Slot (device=0x%02x) not found\n", device);
 	return NULL;
 }
 
@@ -273,7 +287,9 @@ static inline void amd_pogo_errata_restore_misc_reg(struct slot *p_slot)
 	pci_read_config_dword(p_slot->ctrl->pci_dev, PCIX_MISC_BRIDGE_ERRORS_OFFSET, &pcix_bridge_errors_reg);
 	perr_set = pcix_bridge_errors_reg & PERR_OBSERVED_MASK;
 	if (perr_set) {
-		dbg ("%s  W1C: Bridge_Errors[ PERR_OBSERVED = %08X]\n",__func__ , perr_set);
+		ctrl_dbg(p_slot->ctrl,
+			 "Bridge_Errors[ PERR_OBSERVED = %08X] (W1C)\n",
+			 perr_set);
 
 		pci_write_config_dword(p_slot->ctrl->pci_dev, PCIX_MISC_BRIDGE_ERRORS_OFFSET, perr_set);
 	}
@@ -282,7 +298,7 @@ static inline void amd_pogo_errata_restore_misc_reg(struct slot *p_slot)
 	pci_read_config_dword(p_slot->ctrl->pci_dev, PCIX_MEM_BASE_LIMIT_OFFSET, &pcix_mem_base_reg);
 	rse_set = pcix_mem_base_reg & RSE_MASK;
 	if (rse_set) {
-		dbg ("%s  W1C: Memory_Base_Limit[ RSE ]\n",__func__ );
+		ctrl_dbg(p_slot->ctrl, "Memory_Base_Limit[ RSE ] (W1C)\n");
 
 		pci_write_config_dword(p_slot->ctrl->pci_dev, PCIX_MEM_BASE_LIMIT_OFFSET, rse_set);
 	}

drivers/pci/hotplug/shpchp_core.c

@@ -89,7 +89,8 @@ static void release_slot(struct hotplug_slot *hotplug_slot)
 {
 	struct slot *slot = hotplug_slot->private;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	kfree(slot->hotplug_slot->info);
 	kfree(slot->hotplug_slot);
@@ -135,13 +136,16 @@ static int init_slots(struct controller *ctrl)
 		snprintf(name, SLOT_NAME_SIZE, "%d", slot->number);
 		hotplug_slot->ops = &shpchp_hotplug_slot_ops;
 
-		dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x "
-		    "slot_device_offset=%x\n", slot->bus, slot->device,
-		    slot->hp_slot, slot->number, ctrl->slot_device_offset);
+ 		ctrl_dbg(ctrl, "Registering domain:bus:dev=%04x:%02x:%02x "
+ 			 "hp_slot=%x sun=%x slot_device_offset=%x\n",
+ 			 pci_domain_nr(ctrl->pci_dev->subordinate),
+ 			 slot->bus, slot->device, slot->hp_slot, slot->number,
+ 			 ctrl->slot_device_offset);
 		retval = pci_hp_register(slot->hotplug_slot,
 				ctrl->pci_dev->subordinate, slot->device, name);
 		if (retval) {
-			err("pci_hp_register failed with error %d\n", retval);
+			ctrl_err(ctrl, "pci_hp_register failed with error %d\n",
+				 retval);
 			goto error_info;
 		}
 
@@ -187,7 +191,8 @@ static int set_attention_status (struct hotplug_slot *hotplug_slot, u8 status)
 {
 	struct slot *slot = get_slot(hotplug_slot);
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	hotplug_slot->info->attention_status = status;
 	slot->hpc_ops->set_attention_status(slot, status);
@@ -199,7 +204,8 @@ static int enable_slot (struct hotplug_slot *hotplug_slot)
 {
 	struct slot *slot = get_slot(hotplug_slot);
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	return shpchp_sysfs_enable_slot(slot);
 }
@@ -208,7 +214,8 @@ static int disable_slot (struct hotplug_slot *hotplug_slot)
 {
 	struct slot *slot = get_slot(hotplug_slot);
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	return shpchp_sysfs_disable_slot(slot);
 }
@@ -218,7 +225,8 @@ static int get_power_status (struct hotplug_slot *hotplug_slot, u8 *value)
 	struct slot *slot = get_slot(hotplug_slot);
 	int retval;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_power_status(slot, value);
 	if (retval < 0)
@@ -232,7 +240,8 @@ static int get_attention_status (struct hotplug_slot *hotplug_slot, u8 *value)
 	struct slot *slot = get_slot(hotplug_slot);
 	int retval;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_attention_status(slot, value);
 	if (retval < 0)
@@ -246,7 +255,8 @@ static int get_latch_status (struct hotplug_slot *hotplug_slot, u8 *value)
 	struct slot *slot = get_slot(hotplug_slot);
 	int retval;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_latch_status(slot, value);
 	if (retval < 0)
@@ -260,7 +270,8 @@ static int get_adapter_status (struct hotplug_slot *hotplug_slot, u8 *value)
 	struct slot *slot = get_slot(hotplug_slot);
 	int retval;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_adapter_status(slot, value);
 	if (retval < 0)
@@ -275,7 +286,8 @@ static int get_max_bus_speed(struct hotplug_slot *hotplug_slot,
 	struct slot *slot = get_slot(hotplug_slot);
 	int retval;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_max_bus_speed(slot, value);
 	if (retval < 0)
@@ -289,7 +301,8 @@ static int get_cur_bus_speed (struct hotplug_slot *hotplug_slot, enum pci_bus_sp
 	struct slot *slot = get_slot(hotplug_slot);
 	int retval;
 
-	dbg("%s - physical_slot = %s\n", __func__, slot_name(slot));
+	ctrl_dbg(slot->ctrl, "%s: physical_slot = %s\n",
+		 __func__, slot_name(slot));
 
 	retval = slot->hpc_ops->get_cur_bus_speed(slot, value);
 	if (retval < 0)
@@ -320,15 +333,14 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
 	if (!ctrl) {
-		err("%s : out of memory\n", __func__);
+		dev_err(&pdev->dev, "%s: Out of memory\n", __func__);
 		goto err_out_none;
 	}
 	INIT_LIST_HEAD(&ctrl->slot_list);
 
 	rc = shpc_init(ctrl, pdev);
 	if (rc) {
-		dbg("%s: controller initialization failed\n",
-		    SHPC_MODULE_NAME);
+		ctrl_dbg(ctrl, "Controller initialization failed\n");
 		goto err_out_free_ctrl;
 	}
 
@@ -337,7 +349,7 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	/* Setup the slot information structures */
 	rc = init_slots(ctrl);
 	if (rc) {
-		err("%s: slot initialization failed\n", SHPC_MODULE_NAME);
+		ctrl_err(ctrl, "Slot initialization failed\n");
 		goto err_out_release_ctlr;
 	}
 

drivers/pci/hotplug/shpchp_pci.c

@@ -49,9 +49,7 @@ static void program_fw_provided_values(struct pci_dev *dev)
 	/* use default values if we can't get them from firmware */
 	if (get_hp_params_from_firmware(dev, &hpp) ||
 	    !hpp.t0 || (hpp.t0->revision > 1)) {
-		printk(KERN_WARNING
-		       "%s: Could not get hotplug parameters. Use defaults\n",
-		       __func__);
+		warn("Could not get hotplug parameters. Use defaults\n");
 		hpp.t0 = &hpp.type0_data;
 		hpp.t0->revision = 0;
 		hpp.t0->cache_line_size = 8;
@@ -101,18 +99,20 @@ int __ref shpchp_configure_device(struct slot *p_slot)
 	struct pci_dev *dev;
 	struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
 	int num, fn;
+	struct controller *ctrl = p_slot->ctrl;
 
 	dev = pci_get_slot(parent, PCI_DEVFN(p_slot->device, 0));
 	if (dev) {
-		err("Device %s already exists at %x:%x, cannot hot-add\n",
-				pci_name(dev), p_slot->bus, p_slot->device);
+		ctrl_err(ctrl, "Device %s already exists "
+			 "at %04x:%02x:%02x, cannot hot-add\n", pci_name(dev),
+			 pci_domain_nr(parent), p_slot->bus, p_slot->device);
 		pci_dev_put(dev);
 		return -EINVAL;
 	}
 
 	num = pci_scan_slot(parent, PCI_DEVFN(p_slot->device, 0));
 	if (num == 0) {
-		err("No new device found\n");
+		ctrl_err(ctrl, "No new device found\n");
 		return -ENODEV;
 	}
 
@@ -121,7 +121,7 @@ int __ref shpchp_configure_device(struct slot *p_slot)
 		if (!dev)
 			continue;
 		if ((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
-			err("Cannot hot-add display device %s\n",
+			ctrl_err(ctrl, "Cannot hot-add display device %s\n",
 				 pci_name(dev));
 			pci_dev_put(dev);
 			continue;
@@ -138,13 +138,14 @@ int __ref shpchp_configure_device(struct slot *p_slot)
 					break;
 			}
 			if (busnr >= end) {
-				err("No free bus for hot-added bridge\n");
+				ctrl_err(ctrl,
+					 "No free bus for hot-added bridge\n");
 				pci_dev_put(dev);
 				continue;
 			}
 			child = pci_add_new_bus(parent, dev, busnr);
 			if (!child) {
-				err("Cannot add new bus for %s\n",
+				ctrl_err(ctrl, "Cannot add new bus for %s\n",
 					 pci_name(dev));
 				pci_dev_put(dev);
 				continue;
@@ -168,8 +169,10 @@ int shpchp_unconfigure_device(struct slot *p_slot)
 	int j;
 	u8 bctl = 0;
 	struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
+	struct controller *ctrl = p_slot->ctrl;
 
-	dbg("%s: bus/dev = %x/%x\n", __func__, p_slot->bus, p_slot->device);
+	ctrl_dbg(ctrl, "%s: domain:bus:dev = %04x:%02x:%02x\n",
+		 __func__, pci_domain_nr(parent), p_slot->bus, p_slot->device);
 
 	for (j=0; j<8 ; j++) {
 		struct pci_dev* temp = pci_get_slot(parent,
@@ -177,7 +180,7 @@ int shpchp_unconfigure_device(struct slot *p_slot)
 		if (!temp)
 			continue;
 		if ((temp->class >> 16) == PCI_BASE_CLASS_DISPLAY) {
-			err("Cannot remove display device %s\n",
+			ctrl_err(ctrl, "Cannot remove display device %s\n",
 				 pci_name(temp));
 			pci_dev_put(temp);
 			continue;
@@ -185,7 +188,8 @@ int shpchp_unconfigure_device(struct slot *p_slot)
 		if (temp->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
 			pci_read_config_byte(temp, PCI_BRIDGE_CONTROL, &bctl);
 			if (bctl & PCI_BRIDGE_CTL_VGA) {
-				err("Cannot remove display device %s\n",
+				ctrl_err(ctrl,
+					 "Cannot remove display device %s\n",
 					 pci_name(temp));
 				pci_dev_put(temp);
 				continue;

drivers/pci/irq.c

+/*
+ * PCI IRQ failure handing code
+ *
+ * Copyright (c) 2008 James Bottomley <James.Bottomley@HansenPartnership.com>
+ */
+
+#include <linux/acpi.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+
+static void pci_note_irq_problem(struct pci_dev *pdev, const char *reason)
+{
+	struct pci_dev *parent = to_pci_dev(pdev->dev.parent);
+
+	dev_printk(KERN_ERR, &pdev->dev,
+		   "Potentially misrouted IRQ (Bridge %s %04x:%04x)\n",
+		   parent->dev.bus_id, parent->vendor, parent->device);
+	dev_printk(KERN_ERR, &pdev->dev, "%s\n", reason);
+	dev_printk(KERN_ERR, &pdev->dev, "Please report to linux-kernel@vger.kernel.org\n");
+	WARN_ON(1);
+}
+
+/**
+ * pci_lost_interrupt - reports a lost PCI interrupt
+ * @pdev:	device whose interrupt is lost
+ * 
+ * The primary function of this routine is to report a lost interrupt
+ * in a standard way which users can recognise (instead of blaming the
+ * driver).
+ *
+ * Returns:
+ *  a suggestion for fixing it (although the driver is not required to
+ * act on this).
+ */
+enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *pdev)
+{
+	if (pdev->msi_enabled || pdev->msix_enabled) {
+		enum pci_lost_interrupt_reason ret;
+
+		if (pdev->msix_enabled) {
+			pci_note_irq_problem(pdev, "MSIX routing failure");
+			ret = PCI_LOST_IRQ_DISABLE_MSIX;
+		} else {
+			pci_note_irq_problem(pdev, "MSI routing failure");
+			ret = PCI_LOST_IRQ_DISABLE_MSI;
+		}
+		return ret;
+	}
+#ifdef CONFIG_ACPI
+	if (!(acpi_disabled || acpi_noirq)) {
+		pci_note_irq_problem(pdev, "Potential ACPI misrouting please reboot with acpi=noirq");
+		/* currently no way to fix acpi on the fly */
+		return PCI_LOST_IRQ_DISABLE_ACPI;
+	}
+#endif
+	pci_note_irq_problem(pdev, "unknown cause (not MSI or ACPI)");
+	return PCI_LOST_IRQ_NO_INFORMATION;
+}
+EXPORT_SYMBOL(pci_lost_interrupt);

drivers/pci/pci.c

@@ -1309,27 +1309,32 @@ void pci_enable_ari(struct pci_dev *dev)
 	int pos;
 	u32 cap;
 	u16 ctrl;
+	struct pci_dev *bridge;
 
-	if (!dev->is_pcie)
+	if (!dev->is_pcie || dev->devfn)
 		return;
 
-	if (dev->pcie_type != PCI_EXP_TYPE_ROOT_PORT &&
-	    dev->pcie_type != PCI_EXP_TYPE_DOWNSTREAM)
+	pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ARI);
+	if (!pos)
 		return;
 
-	pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
+	bridge = dev->bus->self;
+	if (!bridge || !bridge->is_pcie)
+		return;
+
+	pos = pci_find_capability(bridge, PCI_CAP_ID_EXP);
 	if (!pos)
 		return;
 
-	pci_read_config_dword(dev, pos + PCI_EXP_DEVCAP2, &cap);
+	pci_read_config_dword(bridge, pos + PCI_EXP_DEVCAP2, &cap);
 	if (!(cap & PCI_EXP_DEVCAP2_ARI))
 		return;
 
-	pci_read_config_word(dev, pos + PCI_EXP_DEVCTL2, &ctrl);
+	pci_read_config_word(bridge, pos + PCI_EXP_DEVCTL2, &ctrl);
 	ctrl |= PCI_EXP_DEVCTL2_ARI;
-	pci_write_config_word(dev, pos + PCI_EXP_DEVCTL2, ctrl);
+	pci_write_config_word(bridge, pos + PCI_EXP_DEVCTL2, ctrl);
 
-	dev->ari_enabled = 1;
+	bridge->ari_enabled = 1;
 }
 
 int

drivers/pci/probe.c

@@ -298,9 +298,6 @@ void __devinit pci_read_bridge_bases(struct pci_bus *child)
 			child->resource[i] = child->parent->resource[i - 3];
 	}
 
-	for(i=0; i<3; i++)
-		child->resource[i] = &dev->resource[PCI_BRIDGE_RESOURCES+i];
-
 	res = child->resource[0];
 	pci_read_config_byte(dev, PCI_IO_BASE, &io_base_lo);
 	pci_read_config_byte(dev, PCI_IO_LIMIT, &io_limit_lo);

include/linux/pci.h

@@ -546,6 +546,13 @@ struct pci_dev __deprecated *pci_find_slot(unsigned int bus,
 					   unsigned int devfn);
 #endif /* CONFIG_PCI_LEGACY */
 
+enum pci_lost_interrupt_reason {
+	PCI_LOST_IRQ_NO_INFORMATION = 0,
+	PCI_LOST_IRQ_DISABLE_MSI,
+	PCI_LOST_IRQ_DISABLE_MSIX,
+	PCI_LOST_IRQ_DISABLE_ACPI,
+};
+enum pci_lost_interrupt_reason pci_lost_interrupt(struct pci_dev *dev);
 int pci_find_capability(struct pci_dev *dev, int cap);
 int pci_find_next_capability(struct pci_dev *dev, u8 pos, int cap);
 int pci_find_ext_capability(struct pci_dev *dev, int cap);