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);