Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

Quoth BenH:
 "Here are a few powerpc fixes for 3.3, all pretty trivial.  I also
  added the patch to define GET_IP/SET_IP so we can use some more
  asm-generic goodness."

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/pseries/eeh: Fix crash when error happens during device probe
  powerpc/pseries: Fix partition migration hang in stop_topology_update
  powerpc/powernv: Disable interrupts while taking phb->lock
  powerpc: Fix WARN_ON in decrementer_check_overflow
  powerpc/wsp: Fix IRQ affinity setting
  powerpc: Implement GET_IP/SET_IP
  powerpc/wsp: Permanently enable PCI class code workaround

9 files changed, 51 insertions, 27 deletions

diff --git a/arch/powerpc/include/asm/ppc-pci.h b/arch/powerpc/include/asm/ppc-pci.h
index 43268f15004..6d422979eba 100644
--- a/arch/powerpc/include/asm/ppc-pci.h
+++ b/arch/powerpc/include/asm/ppc-pci.h
@@ -142,6 +142,11 @@ static inline const char *eeh_pci_name(struct pci_dev *pdev)
         return pdev ? pci_name(pdev) : "<null>";
 } 
 
+static inline const char *eeh_driver_name(struct pci_dev *pdev)
+{
+        return (pdev && pdev->driver) ? pdev->driver->name : "<null>";
+}
+
 #endif /* CONFIG_EEH */
 
 #else /* CONFIG_PCI */
diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h
index 78a205162fd..84cc7840cd1 100644
--- a/arch/powerpc/include/asm/ptrace.h
+++ b/arch/powerpc/include/asm/ptrace.h
@@ -83,8 +83,18 @@ struct pt_regs {
 
 #ifndef __ASSEMBLY__
 
-#define instruction_pointer(regs) ((regs)->nip)
-#define user_stack_pointer(regs) ((regs)->gpr[1])
+#define GET_IP(regs)            ((regs)->nip)
+#define GET_USP(regs)           ((regs)->gpr[1])
+#define GET_FP(regs)            (0)
+#define SET_FP(regs, val)
+
+#ifdef CONFIG_SMP
+extern unsigned long profile_pc(struct pt_regs *regs);
+#define profile_pc profile_pc
+#endif
+
+#include <asm-generic/ptrace.h>
+
 #define kernel_stack_pointer(regs) ((regs)->gpr[1])
 static inline int is_syscall_success(struct pt_regs *regs)
 {
@@ -99,12 +109,6 @@ static inline long regs_return_value(struct pt_regs *regs)
                 return -regs->gpr[3];
 }
 
-#ifdef CONFIG_SMP
-extern unsigned long profile_pc(struct pt_regs *regs);
-#else
-#define profile_pc(regs) instruction_pointer(regs)
-#endif
-
 #ifdef __powerpc64__
 #define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1)
 #else
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 701d4aceb4f..01e2877e8e0 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -118,10 +118,14 @@ static inline notrace void set_soft_enabled(unsigned long enable)
 static inline notrace void decrementer_check_overflow(void)
 {
         u64 now = get_tb_or_rtc();
-        u64 *next_tb = &__get_cpu_var(decrementers_next_tb);
+        u64 *next_tb;
+
+        preempt_disable();
+        next_tb = &__get_cpu_var(decrementers_next_tb);
 
         if (now >= *next_tb)
                 set_dec(1);
+        preempt_enable();
 }
 
 notrace void arch_local_irq_restore(unsigned long en)
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 517b1d8f455..9f843cdfee9 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -716,7 +716,6 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w
         int cpu;
 
         slb_set_size(SLB_MIN_SIZE);
-        stop_topology_update();
         printk(KERN_DEBUG "calling ibm,suspend-me on cpu %i\n", smp_processor_id());
 
         while (rc == H_MULTI_THREADS_ACTIVE && !atomic_read(&data->done) &&
@@ -732,7 +731,6 @@ static int __rtas_suspend_last_cpu(struct rtas_suspend_me_data *data, int wake_w
                 rc = atomic_read(&data->error);
 
         atomic_set(&data->error, rc);
-        start_topology_update();
         pSeries_coalesce_init();
 
         if (wake_when_done) {
@@ -846,6 +844,7 @@ int rtas_ibm_suspend_me(struct rtas_args *args)
         atomic_set(&data.error, 0);
         data.token = rtas_token("ibm,suspend-me");
         data.complete = &done;
+        stop_topology_update();
 
         /* Call function on all CPUs.  One of us will make the
          * rtas call
@@ -858,6 +857,8 @@ int rtas_ibm_suspend_me(struct rtas_args *args)
         if (atomic_read(&data.error) != 0)
                 printk(KERN_ERR "Error doing global join\n");
 
+        start_topology_update();
+
         return atomic_read(&data.error);
 }
 #else /* CONFIG_PPC_PSERIES */
diff --git a/arch/powerpc/platforms/powernv/pci.c b/arch/powerpc/platforms/powernv/pci.c
index a70bc1e385e..f92b9ef7340 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -52,32 +52,38 @@ static int pnv_msi_check_device(struct pci_dev* pdev, int nvec, int type)
 
 static unsigned int pnv_get_one_msi(struct pnv_phb *phb)
 {
-        unsigned int id;
+        unsigned long flags;
+        unsigned int id, rc;
+
+        spin_lock_irqsave(&phb->lock, flags);
 
-        spin_lock(&phb->lock);
         id = find_next_zero_bit(phb->msi_map, phb->msi_count, phb->msi_next);
         if (id >= phb->msi_count && phb->msi_next)
                 id = find_next_zero_bit(phb->msi_map, phb->msi_count, 0);
         if (id >= phb->msi_count) {
-                spin_unlock(&phb->lock);
-                return 0;
+                rc = 0;
+                goto out;
         }
         __set_bit(id, phb->msi_map);
-        spin_unlock(&phb->lock);
-        return id + phb->msi_base;
+        rc = id + phb->msi_base;
+out:
+        spin_unlock_irqrestore(&phb->lock, flags);
+        return rc;
 }
 
 static void pnv_put_msi(struct pnv_phb *phb, unsigned int hwirq)
 {
+        unsigned long flags;
         unsigned int id;
 
         if (WARN_ON(hwirq < phb->msi_base ||
                     hwirq >= (phb->msi_base + phb->msi_count)))
                 return;
         id = hwirq - phb->msi_base;
-        spin_lock(&phb->lock);
+
+        spin_lock_irqsave(&phb->lock, flags);
         __clear_bit(id, phb->msi_map);
-        spin_unlock(&phb->lock);
+        spin_unlock_irqrestore(&phb->lock, flags);
 }
 
 static int pnv_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
diff --git a/arch/powerpc/platforms/pseries/eeh.c b/arch/powerpc/platforms/pseries/eeh.c
index 565869022e3..c0b40af4ce4 100644
--- a/arch/powerpc/platforms/pseries/eeh.c
+++ b/arch/powerpc/platforms/pseries/eeh.c
@@ -551,9 +551,9 @@ int eeh_dn_check_failure(struct device_node *dn, struct pci_dev *dev)
                         printk (KERN_ERR "EEH: %d reads ignored for recovering device at "
                                 "location=%s driver=%s pci addr=%s\n",
                                 pdn->eeh_check_count, location,