r8169: failure to enable mwi should not be fatal

Few (6) network drivers enable mwi explicitly. Fewer worry about a
failure.

It is not a fix but it should avoid some annoyance like
http://bugzilla.kernel.org/show_bug.cgi?id=15454

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Conrad Kostecki <conikost@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index dbb1f5a..2b54389 100644 (file)
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -2759,6 +2759,7 @@ static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
 {
        iounmap(ioaddr);
        pci_release_regions(pdev);
+       pci_clear_mwi(pdev);
        pci_disable_device(pdev);
        free_netdev(dev);
 }
@@ -3014,9 +3015,8 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                goto err_out_free_dev_1;
        }
 
-       rc = pci_set_mwi(pdev);
-       if (rc < 0)
-               goto err_out_disable_2;
+       if (pci_set_mwi(pdev) < 0)
+               netif_info(tp, probe, dev, "Mem-Wr-Inval unavailable\n");
 
        /* make sure PCI base addr 1 is MMIO */
        if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
@@ -3024,7 +3024,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                          "region #%d not an MMIO resource, aborting\n",
                          region);
                rc = -ENODEV;
-               goto err_out_mwi_3;
+               goto err_out_mwi_2;
        }
 
        /* check for weird/broken PCI region reporting */
@@ -3032,13 +3032,13 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                netif_err(tp, probe, dev,
                          "Invalid PCI region size(s), aborting\n");
                rc = -ENODEV;
-               goto err_out_mwi_3;
+               goto err_out_mwi_2;
        }
 
        rc = pci_request_regions(pdev, MODULENAME);
        if (rc < 0) {
                netif_err(tp, probe, dev, "could not request regions\n");
-               goto err_out_mwi_3;
+               goto err_out_mwi_2;
        }
 
        tp->cp_cmd = PCIMulRW | RxChkSum;
@@ -3051,7 +3051,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
                if (rc < 0) {
                        netif_err(tp, probe, dev, "DMA configuration failed\n");
-                       goto err_out_free_res_4;
+                       goto err_out_free_res_3;
                }
        }
 
@@ -3060,7 +3060,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
        if (!ioaddr) {
                netif_err(tp, probe, dev, "cannot remap MMIO, aborting\n");
                rc = -EIO;
-               goto err_out_free_res_4;
+               goto err_out_free_res_3;
        }
 
        tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
@@ -3102,7 +3102,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
        if (i == ARRAY_SIZE(rtl_chip_info)) {
                dev_err(&pdev->dev,
                        "driver bug, MAC version not found in rtl_chip_info\n");
-               goto err_out_msi_5;
+               goto err_out_msi_4;
        }
        tp->chipset = i;
 
@@ -3167,7 +3167,7 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
        rc = register_netdev(dev);
        if (rc < 0)
-               goto err_out_msi_5;
+               goto err_out_msi_4;
 
        pci_set_drvdata(pdev, dev);
 
@@ -3190,14 +3190,13 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 out:
        return rc;
 
-err_out_msi_5:
+err_out_msi_4:
        rtl_disable_msi(pdev, tp);
        iounmap(ioaddr);
-err_out_free_res_4:
+err_out_free_res_3:
        pci_release_regions(pdev);
-err_out_mwi_3:
+err_out_mwi_2:
        pci_clear_mwi(pdev);
-err_out_disable_2:
        pci_disable_device(pdev);
 err_out_free_dev_1:
        free_netdev(dev);