[PATCH 2/4 RFC] fsl/msi: Move fsl, msi mode specific MSI device search out of main loop

@@ -178,7 +178,8 @@ static int fsl_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 	unsigned int virq;
 	struct msi_desc *entry;
 	struct msi_msg msg;
-	struct fsl_msi *msi_data;
+	struct fsl_msi *msi_data = NULL;
+	bool specific_msi_bank = false;
 
 	if (type == PCI_CAP_ID_MSIX)
 		pr_debug("fslmsi: MSI-X untested, trying anyway.\n");

@@ -199,12 +200,9 @@ static int fsl_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 				hose->dn->full_name, np->phandle);
 			return -EINVAL;
 		}
-	}
-
-	list_for_each_entry(entry, &pdev->msi_list, list) {
 		/*
-		 * Loop over all the MSI devices until we find one that has an
-		 * available interrupt.
+		 * Loop over all the MSI devices till we find
+		 * specific MSI device.
 		 */
 		list_for_each_entry(msi_data, &msi_head, list) {
 			/*

@@ -215,12 +213,33 @@ static int fsl_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
 			 * has the additional benefit of skipping over MSI
 			 * nodes that are not mapped in the PAMU.
 			 */
-			if (phandle && (phandle != msi_data->phandle))
-				continue;
+			if (phandle == msi_data->phandle) {
+				specific_msi_bank = true;
+				break;
+			}
+		}
 
+		if (!specific_msi_bank) {
+			dev_err(&pdev->dev,
+				"No specific MSI device found for node %s\n",
+				hose->dn->full_name);
+			return -EINVAL;
+		}
+	}
+
+	list_for_each_entry(entry, &pdev->msi_list, list) {
+		if (specific_msi_bank) {
 			hwirq = msi_bitmap_alloc_hwirqs(&msi_data->bitmap, 1);
-			if (hwirq >= 0)
-				break;
+		} else {
+			/*
+			 * Loop over all the MSI devices until we find one that has an
+			 * available interrupt.
+			 */
+			list_for_each_entry(msi_data, &msi_head, list) {
+				hwirq = msi_bitmap_alloc_hwirqs(&msi_data->bitmap, 1);
+				if (hwirq >= 0)
+					break;
+			}
 		}
 
 		if (hwirq < 0) {