powerpc/powernv: Cleanup on EEH comments

This applies cleanup on eeh-powernv.c, no functional changes:

   * Remove unnecessary comments and empty line.
   * Correct inaccurate comments.
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/platforms/powernv/eeh-powernv.c

@@ -43,17 +43,11 @@
 static bool pnv_eeh_nb_init = false;
 static int eeh_event_irq = -EINVAL;
 
-/**
- * pnv_eeh_init - EEH platform dependent initialization
- *
- * EEH platform dependent initialization on powernv
- */
 static int pnv_eeh_init(void)
 {
 	struct pci_controller *hose;
 	struct pnv_phb *phb;
 
-	/* We require OPALv3 */
 	if (!firmware_has_feature(FW_FEATURE_OPALv3)) {
 		pr_warn("%s: OPALv3 is required !\n",
 			__func__);
@@ -77,9 +71,9 @@ static int pnv_eeh_init(void)
 		/*
 		 * PE#0 should be regarded as valid by EEH core
 		 * if it's not the reserved one. Currently, we
-		 * have the reserved PE#0 and PE#127 for PHB3
+		 * have the reserved PE#255 and PE#127 for PHB3
 		 * and P7IOC separately. So we should regard
-		 * PE#0 as valid for P7IOC.
+		 * PE#0 as valid for PHB3 and P7IOC.
 		 */
 		if (phb->ioda.reserved_pe != 0)
 			eeh_add_flag(EEH_VALID_PE_ZERO);
@@ -284,7 +278,6 @@ static int pnv_eeh_post_init(void)
 #endif /* CONFIG_DEBUG_FS */
 	}
 
-
 	return ret;
 }
 
@@ -490,7 +483,6 @@ static int pnv_eeh_set_option(struct eeh_pe *pe, int option)
 	int opt, ret = 0;
 	s64 rc;
 
-	/* Sanity check on option */
 	switch (option) {
 	case EEH_OPT_DISABLE:
 		return -EPERM;
@@ -1065,7 +1057,6 @@ static int pnv_eeh_err_inject(struct eeh_pe *pe, int type, int func,
 	struct pnv_phb *phb = hose->private_data;
 	s64 rc;
 
-	/* Sanity check on error type */
 	if (type != OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR &&
 	    type != OPAL_ERR_INJECT_TYPE_IOA_BUS_ERR64) {
 		pr_warn("%s: Invalid error type %d\n",