skd: Use pci_enable_msix_range() instead of pci_enable_msix()

As result of deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers
using these two interfaces need to be updated to use the
new pci_enable_msi_range() and pci_enable_msix_range()
interfaces.
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Cc: linux-pci@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>

drivers/block/skd_main.c

@@ -3932,42 +3932,28 @@ static void skd_release_msix(struct skd_device *skdev)
 
 static int skd_acquire_msix(struct skd_device *skdev)
 {
-	int i, rc, msix_count = SKD_MAX_MSIX_COUNT;
+	int i, rc;
 	struct pci_dev *pdev = skdev->pdev;
 	struct msix_entry *entries;
 	struct skd_msix_entry *qentry;
 
-	entries = kzalloc(sizeof(struct msix_entry) * msix_count, GFP_KERNEL);
+	entries = kzalloc(sizeof(struct msix_entry) * SKD_MAX_MSIX_COUNT,
+			  GFP_KERNEL);
 	if (!entries)
 		return -ENOMEM;
 
-	for (i = 0; i < msix_count; i++)
+	for (i = 0; i < SKD_MAX_MSIX_COUNT; i++)
 		entries[i].entry = i;
 
-	rc = pci_enable_msix(pdev, entries, msix_count);
-	if (rc < 0)
-		goto msix_out;
-	else if (rc) {
-		if (rc < SKD_MIN_MSIX_COUNT) {
+	rc = pci_enable_msix_range(pdev, entries,
+				   SKD_MIN_MSIX_COUNT, SKD_MAX_MSIX_COUNT);
+	if (rc < 0) {
 		pr_err("(%s): failed to enable MSI-X %d\n",
 		       skd_name(skdev), rc);
 		goto msix_out;
 	}
-		pr_debug("%s:%s:%d %s: <%s> allocated %d MSI-X vectors\n",
-			 skdev->name, __func__, __LINE__,
-			 pci_name(pdev), skdev->name, rc);
 
-		msix_count = rc;
-		rc = pci_enable_msix(pdev, entries, msix_count);
-		if (rc) {
-			pr_err("(%s): failed to enable MSI-X "
-			       "support (%d) %d\n",
-			       skd_name(skdev), msix_count, rc);
-			goto msix_out;
-		}
-	}
-
-	skdev->msix_count = msix_count;
+	skdev->msix_count = rc;
 	skdev->msix_entries = kzalloc(sizeof(struct skd_msix_entry) *
 				      skdev->msix_count, GFP_KERNEL);
 	if (!skdev->msix_entries) {
@@ -4046,8 +4032,8 @@ static int skd_acquire_irq(struct skd_device *skdev)
 	case SKD_IRQ_MSI:
 		snprintf(skdev->isr_name, sizeof(skdev->isr_name), "%s%d-msi",
 			 DRV_NAME, skdev->devno);
-		rc = pci_enable_msi(pdev);
-		if (!rc) {
+		rc = pci_enable_msi_range(pdev, 1, 1);
+		if (rc > 0) {
 			rc = devm_request_irq(&pdev->dev, pdev->irq, skd_isr, 0,
 					      skdev->isr_name, skdev);
 			if (rc) {