[POWERPC] Assorted janitorial EEH cleanups

Assorted minor cleanups to EEH code; -- use literals, use
kerneldoc format.

Signed-off-by: Linas Vepstas <linas@austin.ibm.com>

----
 arch/powerpc/platforms/pseries/eeh.c        |   13 ++++++++++---
 arch/powerpc/platforms/pseries/eeh_driver.c |    7 ++++---
 include/asm-powerpc/ppc-pci.h               |   18 +++++++++++++++---
 3 files changed, 29 insertions(+), 9 deletions(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/pseries/eeh_driver.c b/arch/powerpc/platforms/pseries/eeh_driver.c
index f07d849..161a584 100644
--- a/arch/powerpc/platforms/pseries/eeh_driver.c
+++ b/arch/powerpc/platforms/pseries/eeh_driver.c
@@ -378,8 +378,9 @@
 
 	/* Since rtas may enable MMIO when posting the error log,
 	 * don't post the error log until after all dev drivers
-	 * have been informed. */
-	eeh_slot_error_detail(frozen_pdn, 1 /* Temporary Error */);
+	 * have been informed.
+	 */
+	eeh_slot_error_detail(frozen_pdn, EEH_LOG_TEMP_FAILURE);
 
 	/* If all device drivers were EEH-unaware, then shut
 	 * down all of the device drivers, and hope they
@@ -470,7 +471,7 @@
 		location, drv_str, pci_str);
 
 perm_error:
-	eeh_slot_error_detail(frozen_pdn, 2 /* Permanent Error */);
+	eeh_slot_error_detail(frozen_pdn, EEH_LOG_PERM_FAILURE);
 
 	/* Notify all devices that they're about to go down. */
 	pci_walk_bus(frozen_bus, eeh_report_failure, NULL);