Patchwork [v3,5/5] PCI: Retry assign unassigned resources for hotadd root bus

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Submitter Yinghai Lu
Date May 7, 2013, 10:17 p.m.
Message ID <1367965054-9013-6-git-send-email-yinghai@kernel.org>
Download mbox | patch
Permalink /patch/242473/
State Superseded
Headers show

Comments

Yinghai Lu - May 7, 2013, 10:17 p.m.
Let root bus hotadd path use same code for booting path.
As driver is not loaded yet, we could retry to make sure
all pci devices get resources allocated.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

---
 drivers/acpi/pci_root.c |    2 +-
 drivers/pci/setup-bus.c |   11 +++++------
 include/linux/pci.h     |    1 +
 3 files changed, 7 insertions(+), 7 deletions(-)

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Patch

Index: linux-2.6/drivers/pci/setup-bus.c
===================================================================
--- linux-2.6.orig/drivers/pci/setup-bus.c
+++ linux-2.6/drivers/pci/setup-bus.c
@@ -1331,7 +1331,7 @@  static void pci_bus_dump_resources(struc
 	}
 }
 
-static int __init pci_bus_get_depth(struct pci_bus *bus)
+static int pci_bus_get_depth(struct pci_bus *bus)
 {
 	int depth = 0;
 	struct pci_dev *dev;
@@ -1365,7 +1365,7 @@  enum enable_type {
 	auto_enabled,
 };
 
-static enum enable_type pci_realloc_enable __initdata = undefined;
+static enum enable_type pci_realloc_enable = undefined;
 void __init pci_realloc_get_opt(char *str)
 {
 	if (!strncmp(str, "off", 3))
@@ -1373,12 +1373,12 @@  void __init pci_realloc_get_opt(char *st
 	else if (!strncmp(str, "on", 2))
 		pci_realloc_enable = user_enabled;
 }
-static bool __init pci_realloc_enabled(enum enable_type enable)
+static bool pci_realloc_enabled(enum enable_type enable)
 {
 	return enable >= user_enabled;
 }
 
-static enum enable_type __init pci_realloc_detect(struct pci_bus *bus,
+static enum enable_type pci_realloc_detect(struct pci_bus *bus,
 			 enum enable_type enable_local)
 {
 #if defined(CONFIG_PCI_IOV) && defined(CONFIG_PCI_REALLOC_ENABLE_AUTO)
@@ -1442,8 +1442,7 @@  static unsigned long pci_bus_res_type_ma
  * second  and later try will clear small leaf bridge res
  * will stop till to the max  deepth if can not find good one
  */
-static void __init
-pci_assign_unassigned_root_bus_resources(struct pci_bus *bus)
+void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus)
 {
 	LIST_HEAD(realloc_head); /* list of resources that
 					want additional resources */
Index: linux-2.6/drivers/acpi/pci_root.c
===================================================================
--- linux-2.6.orig/drivers/acpi/pci_root.c
+++ linux-2.6/drivers/acpi/pci_root.c
@@ -535,7 +535,7 @@  static int acpi_pci_root_add(struct acpi
 
 	if (system_state != SYSTEM_BOOTING) {
 		pcibios_resource_survey_bus(root->bus);
-		pci_assign_unassigned_bus_resources(root->bus);
+		pci_assign_unassigned_root_bus_resources(root->bus);
 	}
 
 	pci_bus_add_devices(root->bus);
Index: linux-2.6/include/linux/pci.h
===================================================================
--- linux-2.6.orig/include/linux/pci.h
+++ linux-2.6/include/linux/pci.h
@@ -1002,6 +1002,7 @@  int pci_claim_resource(struct pci_dev *,
 void pci_assign_unassigned_resources(void);
 void pci_assign_unassigned_bridge_resources(struct pci_dev *bridge);
 void pci_assign_unassigned_bus_resources(struct pci_bus *bus);
+void pci_assign_unassigned_root_bus_resources(struct pci_bus *bus);
 void pdev_enable_device(struct pci_dev *);
 int pci_enable_resources(struct pci_dev *, int mask);
 void pci_fixup_irqs(u8 (*)(struct pci_dev *, u8 *),