crypto: cavium/nitrox - use pcie_flr instead of duplicating it

check the flr capability using pcie_has_flr() and do the flr.
Signed-off-by: Srikanth Jampala <Jampala.Srikanth@cavium.com>
Reviewed-by: Gadam Sreerama <sgadam@cavium.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

drivers/crypto/cavium/nitrox/nitrox_main.c

@@ -217,7 +217,7 @@ void nitrox_put_device(struct nitrox_device *ndev)
 	smp_mb__after_atomic();
 }
 
-static int nitrox_reset_device(struct pci_dev *pdev)
+static int nitrox_device_flr(struct pci_dev *pdev)
 {
 	int pos = 0;
 
@@ -227,15 +227,10 @@ static int nitrox_reset_device(struct pci_dev *pdev)
 		return -ENOMEM;
 	}
 
-	pos = pci_pcie_cap(pdev);
-	if (!pos)
-		return -ENOTTY;
+	/* check flr support */
+	if (pcie_has_flr(pdev))
+		pcie_flr(pdev);
 
-	if (!pci_wait_for_pending_transaction(pdev))
-		dev_err(&pdev->dev, "waiting for pending transaction\n");
-
-	pcie_capability_set_word(pdev, PCI_EXP_DEVCTL, PCI_EXP_DEVCTL_BCR_FLR);
-	msleep(100);
 	pci_restore_state(pdev);
 
 	return 0;
@@ -345,7 +340,7 @@ static int nitrox_probe(struct pci_dev *pdev,
 		return err;
 
 	/* do FLR */
-	err = nitrox_reset_device(pdev);
+	err = nitrox_device_flr(pdev);
 	if (err) {
 		dev_err(&pdev->dev, "FLR failed\n");
 		pci_disable_device(pdev);