[POWERPC] EEH: Tolerate high mmio

Some drivers will attempt to perform a lot of mmio even after
an EEH event was detected. This is especially the case for fast cpu's
and PCI-E slots. Be a bit more lenient in allowing this.
Signed-off-by: NLinas Vepstas <linas@austin.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/platforms/pseries/eeh.c

@@ -74,7 +74,7 @@
  * is broken and panic.  This sets the threshold for how many read
  * attempts we allow before panicking.
  */
-#define EEH_MAX_FAILS	100000
+#define EEH_MAX_FAILS	2100000
 
 /* RTAS tokens */
 static int ibm_set_eeh_option;