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

Pull a few more things for powerpc by Benjamin Herrenschmidt:
 - Anton's did some recent improvements to EPOW event reporting on
   pSeries (power supply failures and such).  The patches are self
   contained enough and replace really nasty code so I felt it should
   still go in
 - I did the vio driver registration change Greg requested, I don't see
   the point of leaving that til the next merge window
 - The remaining EEH changes I said were still pending to get rid of the
   EEH references from the generic struct device_node
 - A few more iSeries removal bits
 - A perf bug fix on 970

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/perf: Fix instruction address sampling on 970 and Power4
  powerpc+sparc/vio: Modernize driver registration
  powerpc: Random little legacy iSeries removal tidy ups
  powerpc: Remove NO_IRQ_IGNORE
  powerpc/pseries: Cut down on enthusiastic use of defines in RAS code
  powerpc/pseries: Clean up ras_error_interrupt code
  powerpc/pseries: Remove RTAS_POWERMGM_EVENTS
  powerpc/pseries: Use rtas_get_sensor in RAS code
  powerpc/pseries: Parse and handle EPOW interrupts
  powerpc: Make function that parses RTAS error logs global
  powerpc/eeh: Retrieve PHB from global list
  powerpc/eeh: Remove eeh information from pci_dn
  powerpc/eeh: Remove eeh device from OF node

1 files changed, 34 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index 9f843cdfee9e..4d1a7babe342 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -868,6 +868,40 @@ int rtas_ibm_suspend_me(struct rtas_args *args)
 }
 #endif
 
+/**
+ * Find a specific pseries error log in an RTAS extended event log.
+ * @log: RTAS error/event log
+ * @section_id: two character section identifier
+ *
+ * Returns a pointer to the specified errorlog or NULL if not found.
+ */
+struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log,
+					      uint16_t section_id)
+{
+	struct rtas_ext_event_log_v6 *ext_log =
+		(struct rtas_ext_event_log_v6 *)log->buffer;
+	struct pseries_errorlog *sect;
+	unsigned char *p, *log_end;
+
+	/* Check that we understand the format */
+	if (log->extended_log_length < sizeof(struct rtas_ext_event_log_v6) ||
+	    ext_log->log_format != RTAS_V6EXT_LOG_FORMAT_EVENT_LOG ||
+	    ext_log->company_id != RTAS_V6EXT_COMPANY_ID_IBM)
+		return NULL;
+
+	log_end = log->buffer + log->extended_log_length;
+	p = ext_log->vendor_log;
+
+	while (p < log_end) {
+		sect = (struct pseries_errorlog *)p;
+		if (sect->id == section_id)
+			return sect;
+		p += sect->length;
+	}
+
+	return NULL;
+}
+
 asmlinkage int ppc_rtas(struct rtas_args __user *uargs)
 {
 	struct rtas_args args;