PCI/AER: Factor COR/UNCOR error handling out from aer_isr_one_error()

aer_isr_one_error() duplicates the Error Source ID logging and AER error
processing for Correctable Errors and Uncorrectable Errors.  Factor out the
duplicated code to aer_isr_one_error_type().

aer_isr_one_error() doesn't need the struct aer_rpc pointer, so pass it the
Root Port or RCEC pci_dev pointer instead.

Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Ilpo Järvinen <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Reviewed-by: Kuppuswamy Sathyanarayanan <[email protected]>
Link: https://patch.msgid.link/[email protected]

Author: bjorn-helgaas

drivers/pci/pcie/aer.c

@@ -1273,17 +1273,32 @@ static inline void aer_process_err_devices(struct aer_err_info *e_info)
 }
 
 /**
- * aer_isr_one_error - consume an error detected by Root Port
- * @rpc: pointer to the Root Port which holds an error
+ * aer_isr_one_error_type - consume a Correctable or Uncorrectable Error
+ *			    detected by Root Port or RCEC
+ * @root: pointer to Root Port or RCEC that signaled AER interrupt
+ * @info: pointer to AER error info
+ */
+static void aer_isr_one_error_type(struct pci_dev *root,
+				   struct aer_err_info *info)
+{
+	aer_print_port_info(root, info);
+
+	if (find_source_device(root, info))
+		aer_process_err_devices(info);
+}
+
+/**
+ * aer_isr_one_error - consume error(s) signaled by an AER interrupt from
+ *		       Root Port or RCEC
+ * @root: pointer to Root Port or RCEC that signaled AER interrupt
  * @e_src: pointer to an error source
  */
-static void aer_isr_one_error(struct aer_rpc *rpc,
+static void aer_isr_one_error(struct pci_dev *root,
 		struct aer_err_source *e_src)
 {
-	struct pci_dev *pdev = rpc->rpd;
 	struct aer_err_info e_info;
 
-	pci_rootport_aer_stats_incr(pdev, e_src);
+	pci_rootport_aer_stats_incr(root, e_src);
 
 	/*
 	 * There is a possibility that both correctable error and
@@ -1297,10 +1312,8 @@ static void aer_isr_one_error(struct aer_rpc *rpc,
 			e_info.multi_error_valid = 1;
 		else
 			e_info.multi_error_valid = 0;
-		aer_print_port_info(pdev, &e_info);
 
-		if (find_source_device(pdev, &e_info))
-			aer_process_err_devices(&e_info);
+		aer_isr_one_error_type(root, &e_info);
 	}
 
 	if (e_src->status & PCI_ERR_ROOT_UNCOR_RCV) {
@@ -1316,10 +1329,7 @@ static void aer_isr_one_error(struct aer_rpc *rpc,
 		else
 			e_info.multi_error_valid = 0;
 
-		aer_print_port_info(pdev, &e_info);
-
-		if (find_source_device(pdev, &e_info))
-			aer_process_err_devices(&e_info);
+		aer_isr_one_error_type(root, &e_info);
 	}
 }
 
@@ -1340,7 +1350,7 @@ static irqreturn_t aer_isr(int irq, void *context)
 		return IRQ_NONE;
 
 	while (kfifo_get(&rpc->aer_fifo, &e_src))
-		aer_isr_one_error(rpc, &e_src);
+		aer_isr_one_error(rpc->rpd, &e_src);
 	return IRQ_HANDLED;
 }