powerpc/powernv: Drop PHB operation get_log()

The patch drops PHB operation get_log() and merges its logic to
eeh_ops::get_log().
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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

@@ -530,25 +530,6 @@ static int ioda_eeh_reset(struct eeh_pe *pe, int option)
 	return ret;
 }
 
-/**
- * ioda_eeh_get_log - Retrieve error log
- * @pe: frozen PE
- * @severity: permanent or temporary error
- * @drv_log: device driver log
- * @len: length of device driver log
- *
- * Retrieve error log, which contains log from device driver
- * and firmware.
- */
-static int ioda_eeh_get_log(struct eeh_pe *pe, int severity,
-			    char *drv_log, unsigned long len)
-{
-	if (!eeh_has_flag(EEH_EARLY_DUMP_LOG))
-		pnv_pci_dump_phb_diag_data(pe->phb, pe->data);
-
-	return 0;
-}
-
 /**
  * ioda_eeh_configure_bridge - Configure the PCI bridges for the indicated PE
  * @pe: EEH PE
@@ -905,7 +886,6 @@ struct pnv_eeh_ops ioda_eeh_ops = {
 	.set_option		= ioda_eeh_set_option,
 	.get_state		= ioda_eeh_get_state,
 	.reset			= ioda_eeh_reset,
-	.get_log		= ioda_eeh_get_log,
 	.configure_bridge	= ioda_eeh_configure_bridge,
 	.next_error		= ioda_eeh_next_error
 };

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

@@ -533,14 +533,10 @@ static int pnv_eeh_wait_state(struct eeh_pe *pe, int max_wait)
 static int pnv_eeh_get_log(struct eeh_pe *pe, int severity,
 			   char *drv_log, unsigned long len)
 {
-	struct pci_controller *hose = pe->phb;
-	struct pnv_phb *phb = hose->private_data;
-	int ret = -EEXIST;
+	if (!eeh_has_flag(EEH_EARLY_DUMP_LOG))
+		pnv_pci_dump_phb_diag_data(pe->phb, pe->data);
 
-	if (phb->eeh_ops && phb->eeh_ops->get_log)
-		ret = phb->eeh_ops->get_log(pe, severity, drv_log, len);
-
-	return ret;
+	return 0;
 }
 
 /**

arch/powerpc/platforms/powernv/pci.h

@@ -81,8 +81,6 @@ struct pnv_eeh_ops {
 	int (*set_option)(struct eeh_pe *pe, int option);
 	int (*get_state)(struct eeh_pe *pe);
 	int (*reset)(struct eeh_pe *pe, int option);
-	int (*get_log)(struct eeh_pe *pe, int severity,
-		       char *drv_log, unsigned long len);
 	int (*configure_bridge)(struct eeh_pe *pe);
 	int (*next_error)(struct eeh_pe **pe);
 };