Merge ../powerpc-merge

7 files changed, 77 insertions, 37 deletions

diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index d112aed2999b..fec07a12c6cd 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -989,7 +989,7 @@ source "arch/powerpc/oprofile/Kconfig"
 
 config KPROBES
 	bool "Kprobes (EXPERIMENTAL)"
-	depends on PPC64
+	depends on PPC64 && EXPERIMENTAL && MODULES
 	help
 	  Kprobes allows you to trap at almost any kernel address and
 	  execute a callback function.  register_kprobe() establishes
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 82d117c60d7f..d63cd562d9d5 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -816,8 +816,6 @@ void __init unflatten_device_tree(void)
 {
 	unsigned long start, mem, size;
 	struct device_node **allnextp = &allnodes;
-	char *p = NULL;
-	int l = 0;
 
 	DBG(" -> unflatten_device_tree()\n");
 
@@ -853,19 +851,6 @@ void __init unflatten_device_tree(void)
 	if (of_chosen == NULL)
 		of_chosen = of_find_node_by_path("/chosen@0");
 
-	/* Retreive command line */
-	if (of_chosen != NULL) {
-		p = (char *)get_property(of_chosen, "bootargs", &l);
-		if (p != NULL && l > 0)
-			strlcpy(cmd_line, p, min(l, COMMAND_LINE_SIZE));
-	}
-#ifdef CONFIG_CMDLINE
-	if (l == 0 || (l == 1 && (*p) == 0))
-		strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
-#endif /* CONFIG_CMDLINE */
-
-	DBG("Command line is: %s\n", cmd_line);
-
 	DBG(" <- unflatten_device_tree()\n");
 }
 
@@ -936,6 +921,8 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
 {
 	u32 *prop;
 	unsigned long *lprop;
+	unsigned long l;
+	char *p;
 
 	DBG("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
 
@@ -1000,6 +987,41 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
                crashk_res.end = crashk_res.start + *lprop - 1;
 #endif
 
+	/* Retreive command line */
+ 	p = of_get_flat_dt_prop(node, "bootargs", &l);
+	if (p != NULL && l > 0)
+		strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
+
+#ifdef CONFIG_CMDLINE
+	if (l == 0 || (l == 1 && (*p) == 0))
+		strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+#endif /* CONFIG_CMDLINE */
+
+	DBG("Command line is: %s\n", cmd_line);
+
+	if (strstr(cmd_line, "mem=")) {
+		char *p, *q;
+		unsigned long maxmem = 0;
+
+		for (q = cmd_line; (p = strstr(q, "mem=")) != 0; ) {
+			q = p + 4;
+			if (p > cmd_line && p[-1] != ' ')
+				continue;
+			maxmem = simple_strtoul(q, &q, 0);
+			if (*q == 'k' || *q == 'K') {
+				maxmem <<= 10;
+				++q;
+			} else if (*q == 'm' || *q == 'M') {
+				maxmem <<= 20;
+				++q;
+			} else if (*q == 'g' || *q == 'G') {
+				maxmem <<= 30;
+				++q;
+			}
+		}
+		memory_limit = maxmem;
+	}
+
 	/* break now */
 	return 1;
 }
@@ -1120,7 +1142,7 @@ static void __init early_reserve_mem(void)
 			size_32 = *(reserve_map_32++);
 			if (size_32 == 0)
 				break;
-			DBG("reserving: %lx -> %lx\n", base_32, size_32);
+			DBG("reserving: %x -> %x\n", base_32, size_32);
 			lmb_reserve(base_32, size_32);
 		}
 		return;
diff --git a/arch/powerpc/kernel/vdso64/gettimeofday.S b/arch/powerpc/kernel/vdso64/gettimeofday.S
index ccaeda5136d1..4ee871f1cadb 100644
--- a/arch/powerpc/kernel/vdso64/gettimeofday.S
+++ b/arch/powerpc/kernel/vdso64/gettimeofday.S
@@ -225,9 +225,9 @@ V_FUNCTION_BEGIN(__do_get_xsec)
   .cfi_startproc
 	/* check for update count & load values */
 1:	ld	r8,CFG_TB_UPDATE_COUNT(r3)
-	andi.	r0,r4,1			/* pending update ? loop */
+	andi.	r0,r8,1			/* pending update ? loop */
 	bne-	1b
-	xor	r0,r4,r4		/* create dependency */
+	xor	r0,r8,r8		/* create dependency */
 	add	r3,r3,r0
 
 	/* Get TB & offset it */
diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c
index ae2c919cbecd..7d9ce9a48219 100644
--- a/arch/powerpc/mm/hash_utils_64.c
+++ b/arch/powerpc/mm/hash_utils_64.c
@@ -169,7 +169,7 @@ int htab_bolt_mapping(unsigned long vstart, unsigned long vend,
 #ifdef CONFIG_PPC_ISERIES
 		if (_machine == PLATFORM_ISERIES_LPAR)
 			ret = iSeries_hpte_insert(hpteg, va,
-						  virt_to_abs(paddr),
+						  __pa(vaddr),
 						  tmp_mode,
 						  HPTE_V_BOLTED,
 						  psize);
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 83578313ee7e..2ab9dcdfb415 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -893,6 +893,20 @@ void eeh_add_device_tree_early(struct device_node *dn)
 }
 EXPORT_SYMBOL_GPL(eeh_add_device_tree_early);
 
+void eeh_add_device_tree_late(struct pci_bus *bus)
+{
+	struct pci_dev *dev;
+
+	list_for_each_entry(dev, &bus->devices, bus_list) {
+ 		eeh_add_device_late(dev);
+ 		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
+ 			struct pci_bus *subbus = dev->subordinate;
+ 			if (subbus)
+ 				eeh_add_device_tree_late(subbus);
+ 		}
+	}
+}
+
 /**
  * eeh_add_device_late - perform EEH initialization for the indicated pci device
  * @dev: pci device for which to set up EEH
diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c
index e3cbba49fd6e..b811d5ff92fe 100644
--- a/arch/powerpc/platforms/pseries/eeh_driver.c
+++ b/arch/powerpc/platforms/pseries/eeh_driver.c
@@ -37,7 +37,7 @@
 
 static inline const char * pcid_name (struct pci_dev *pdev)
 {
-	if (pdev->dev.driver)
+	if (pdev && pdev->dev.driver)
 		return pdev->dev.driver->name;
 	return "";
 }
diff --git a/arch/powerpc/platforms/pseries/pci_dlpar.c b/arch/powerpc/platforms/pseries/pci_dlpar.c
index bdaa8aabdaa6..f3bad900bbcf 100644
--- a/arch/powerpc/platforms/pseries/pci_dlpar.c
+++ b/arch/powerpc/platforms/pseries/pci_dlpar.c
@@ -106,6 +106,8 @@ pcibios_fixup_new_pci_devices(struct pci_bus *bus, int fix_bus)
 			}
 		}
 	}
+
+	eeh_add_device_tree_late(bus);
 }
 EXPORT_SYMBOL_GPL(pcibios_fixup_new_pci_devices);
 
@@ -114,7 +116,6 @@ pcibios_pci_config_bridge(struct pci_dev *dev)
 {
 	u8 sec_busno;
 	struct pci_bus *child_bus;
-	struct pci_dev *child_dev;
 
 	/* Get busno of downstream bus */
 	pci_read_config_byte(dev, PCI_SECONDARY_BUS, &sec_busno);
@@ -129,10 +130,6 @@ pcibios_pci_config_bridge(struct pci_dev *dev)
 
 	pci_scan_child_bus(child_bus);
 
-	list_for_each_entry(child_dev, &child_bus->devices, bus_list) {
-		eeh_add_device_late(child_dev);
-	}
-
 	/* Fixup new pci devices without touching bus struct */
 	pcibios_fixup_new_pci_devices(child_bus, 0);
 
@@ -160,18 +157,25 @@ pcibios_add_pci_devices(struct pci_bus * bus)
 
 	eeh_add_device_tree_early(dn);
 
-	/* pci_scan_slot should find all children */
-	slotno = PCI_SLOT(PCI_DN(dn->child)->devfn);
-	num = pci_scan_slot(bus, PCI_DEVFN(slotno, 0));
-	if (num) {
-		pcibios_fixup_new_pci_devices(bus, 1);
-		pci_bus_add_devices(bus);
-	}
+	if (_machine == PLATFORM_PSERIES_LPAR) {
+		/* use ofdt-based probe */
+		of_scan_bus(dn, bus);
+		if (!list_empty(&bus->devices)) {
+			pcibios_fixup_new_pci_devices(bus, 0);
+			pci_bus_add_devices(bus);
+		}
+	} else {
+		/* use legacy probe */
+		slotno = PCI_SLOT(PCI_DN(dn->child)->devfn);
+		num = pci_scan_slot(bus, PCI_DEVFN(slotno, 0));
+		if (num) {
+			pcibios_fixup_new_pci_devices(bus, 1);
+			pci_bus_add_devices(bus);
+		}
 
-	list_for_each_entry(dev, &bus->devices, bus_list) {
-		eeh_add_device_late (dev);
-		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
-			pcibios_pci_config_bridge(dev);
+		list_for_each_entry(dev, &bus->devices, bus_list)
+			if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE)
+				pcibios_pci_config_bridge(dev);
 	}
 }
 EXPORT_SYMBOL_GPL(pcibios_add_pci_devices);