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

Pull powerpc merge from Benjamin Herrenschmidt:
 "Here's the powerpc batch for this merge window.  It is going to be a
  bit more nasty than usual as in touching things outside of
  arch/powerpc mostly due to the big iSeriesectomy :-) We finally got
  rid of the bugger (legacy iSeries support) which was a PITA to
  maintain and that nobody really used anymore.

  Here are some of the highlights:

   - Legacy iSeries is gone.  Thanks Stephen ! There's still some bits
     and pieces remaining if you do a grep -ir series arch/powerpc but
     they are harmless and will be removed in the next few weeks
     hopefully.

   - The 'fadump' functionality (Firmware Assisted Dump) replaces the
     previous (equivalent) "pHyp assisted dump"...  it's a rewrite of a
     mechanism to get the hypervisor to do crash dumps on pSeries, the
     new implementation hopefully being much more reliable.  Thanks
     Mahesh Salgaonkar.

   - The "EEH" code (pSeries PCI error handling & recovery) got a big
     spring cleaning, motivated by the need to be able to implement a
     new backend for it on top of some new different type of firwmare.

     The work isn't complete yet, but a good chunk of the cleanups is
     there.  Note that this adds a field to struct device_node which is
     not very nice and which Grant objects to.  I will have a patch soon
     that moves that to a powerpc private data structure (hopefully
     before rc1) and we'll improve things further later on (hopefully
     getting rid of the need for that pointer completely).  Thanks Gavin
     Shan.

   - I dug into our exception & interrupt handling code to improve the
     way we do lazy interrupt handling (and make it work properly with
     "edge" triggered interrupt sources), and while at it found & fixed
     a wagon of issues in those areas, including adding support for page
     fault retry & fatal signals on page faults.

   - Your usual random batch of small fixes & updates, including a bunch
     of new embedded boards, both Freescale and APM based ones, etc..."

I fixed up some conflicts with the generalized irq-domain changes from
Grant Likely, hopefully correctly.

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (141 commits)
  powerpc/ps3: Do not adjust the wrapper load address
  powerpc: Remove the rest of the legacy iSeries include files
  powerpc: Remove the remaining CONFIG_PPC_ISERIES pieces
  init: Remove CONFIG_PPC_ISERIES
  powerpc: Remove FW_FEATURE ISERIES from arch code
  tty/hvc_vio: FW_FEATURE_ISERIES is no longer selectable
  powerpc/spufs: Fix double unlocks
  powerpc/5200: convert mpc5200 to use of_platform_populate()
  powerpc/mpc5200: add options to mpc5200_defconfig
  powerpc/mpc52xx: add a4m072 board support
  powerpc/mpc5200: update mpc5200_defconfig to fit for charon board
  Documentation/powerpc/mpc52xx.txt: Checkpatch cleanup
  powerpc/44x: Add additional device support for APM821xx SoC and Bluestone board
  powerpc/44x: Add support PCI-E for APM821xx SoC and Bluestone board
  MAINTAINERS: Update PowerPC 4xx tree
  powerpc/44x: The bug fixed support for APM821xx SoC and Bluestone board
  powerpc: document the FSL MPIC message register binding
  powerpc: add support for MPIC message register API
  powerpc/fsl: Added aliased MSIIR register address to MSI node in dts
  powerpc/85xx: mpc8548cds - add 36-bit dts
  ...

1 files changed, 28 insertions, 27 deletions

diff --git a/arch/powerpc/platforms/pseries/eeh_event.c b/arch/powerpc/platforms/pseries/eeh_event.c
index d2383cfb6dfd..4a4752565856 100644
--- a/arch/powerpc/platforms/pseries/eeh_event.c
+++ b/arch/powerpc/platforms/pseries/eeh_event.c
@@ -1,6 +1,4 @@
 /*
- * eeh_event.c
- *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
@@ -46,7 +44,7 @@ DECLARE_WORK(eeh_event_wq, eeh_thread_launcher);
 DEFINE_MUTEX(eeh_event_mutex);
 
 /**
- * eeh_event_handler - dispatch EEH events.
+ * eeh_event_handler - Dispatch EEH events.
  * @dummy - unused
  *
  * The detection of a frozen slot can occur inside an interrupt,
@@ -58,10 +56,10 @@ DEFINE_MUTEX(eeh_event_mutex);
 static int eeh_event_handler(void * dummy)
 {
         unsigned long flags;
-        struct eeh_event        *event;
-        struct pci_dn *pdn;
+        struct eeh_event *event;
+        struct eeh_dev *edev;
 
-        daemonize ("eehd");
+        daemonize("eehd");
         set_current_state(TASK_INTERRUPTIBLE);
 
         spin_lock_irqsave(&eeh_eventlist_lock, flags);
@@ -79,31 +77,37 @@ static int eeh_event_handler(void * dummy)
 
         /* Serialize processing of EEH events */
         mutex_lock(&eeh_event_mutex);
-        eeh_mark_slot(event->dn, EEH_MODE_RECOVERING);
+        edev = event->edev;
+        eeh_mark_slot(eeh_dev_to_of_node(edev), EEH_MODE_RECOVERING);
 
         printk(KERN_INFO "EEH: Detected PCI bus error on device %s\n",
-               eeh_pci_name(event->dev));
+               eeh_pci_name(edev->pdev));
+
+        edev = handle_eeh_events(event);
 
-        pdn = handle_eeh_events(event);
+        eeh_clear_slot(eeh_dev_to_of_node(edev), EEH_MODE_RECOVERING);
+        pci_dev_put(edev->pdev);
 
-        eeh_clear_slot(event->dn, EEH_MODE_RECOVERING);
-        pci_dev_put(event->dev);
         kfree(event);
         mutex_unlock(&eeh_event_mutex);
 
         /* If there are no new errors after an hour, clear the counter. */
-        if (pdn && pdn->eeh_freeze_count>0) {
-                msleep_interruptible (3600*1000);
-                if (pdn->eeh_freeze_count>0)
-                        pdn->eeh_freeze_count--;
+        if (edev && edev->freeze_count>0) {
+                msleep_interruptible(3600*1000);
+                if (edev->freeze_count>0)
+                        edev->freeze_count--;
+
         }
 
         return 0;
 }
 
 /**
- * eeh_thread_launcher
+ * eeh_thread_launcher - Start kernel thread to handle EEH events
  * @dummy - unused
+ *
+ * This routine is called to start the kernel thread for processing
+ * EEH event.
  */
 static void eeh_thread_launcher(struct work_struct *dummy)
 {
@@ -112,18 +116,18 @@ static void eeh_thread_launcher(struct work_struct *dummy)
 }
 
 /**
- * eeh_send_failure_event - generate a PCI error event
- * @dev pci device
+ * eeh_send_failure_event - Generate a PCI error event
+ * @edev: EEH device
  *
  * This routine can be called within an interrupt context;
  * the actual event will be delivered in a normal context
  * (from a workqueue).
  */
-int eeh_send_failure_event (struct device_node *dn,
-                            struct pci_dev *dev)
+int eeh_send_failure_event(struct eeh_dev *edev)
 {
         unsigned long flags;
         struct eeh_event *event;
+        struct device_node *dn = eeh_dev_to_of_node(edev);
         const char *location;
 
         if (!mem_init_done) {
@@ -135,15 +139,14 @@ int eeh_send_failure_event (struct device_node *dn,
         }
         event = kmalloc(sizeof(*event), GFP_ATOMIC);
         if (event == NULL) {
-                printk (KERN_ERR "EEH: out of memory, event not handled\n");
+                printk(KERN_ERR "EEH: out of memory, event not handled\n");
                 return 1;
         }
 
-        if (dev)
-                pci_dev_get(dev);
+        if (edev->pdev)
+                pci_dev_get(edev->pdev);
 
-        event->dn = dn;
-        event->dev = dev;
+        event->edev = edev;
 
         /* We may or may not be called in an interrupt context */
         spin_lock_irqsave(&eeh_eventlist_lock, flags);
@@ -154,5 +157,3 @@ int eeh_send_failure_event (struct device_node *dn,
 
         return 0;
 }
-
-/********************** END OF FILE ******************************/