[PATCH] bcm43xx: Check error returns in initialization routines

A number of the calls in the initialization routines fail to check the returned value for
errors. This patch adds the necessary checks and logs any errors found when appropriate.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/bcm43xx/bcm43xx_main.c
index 62c6235..63fc16f 100644 (file)
--- a/drivers/net/wireless/bcm43xx/bcm43xx_main.c
+++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.c
@@ -2976,8 +2976,10 @@ static int bcm43xx_chipset_attach(struct bcm43xx_private *bcm)
        err = bcm43xx_pctl_set_crystal(bcm, 1);
        if (err)
                goto out;
-       bcm43xx_pci_read_config16(bcm, PCI_STATUS, &pci_status);
-       bcm43xx_pci_write_config16(bcm, PCI_STATUS, pci_status & ~PCI_STATUS_SIG_TARGET_ABORT);
+       err = bcm43xx_pci_read_config16(bcm, PCI_STATUS, &pci_status);
+       if (err)
+               goto out;
+       err = bcm43xx_pci_write_config16(bcm, PCI_STATUS, pci_status & ~PCI_STATUS_SIG_TARGET_ABORT);
 
 out:
        return err;
@@ -3774,12 +3776,18 @@ static int bcm43xx_attach_board(struct bcm43xx_private *bcm)
        }
        net_dev->base_addr = (unsigned long)bcm->mmio_addr;
 
-       bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_VENDOR_ID,
+       err = bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_VENDOR_ID,
                                  &bcm->board_vendor);
-       bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_ID,
+       if (err)
+               goto err_iounmap;
+       err = bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_ID,
                                  &bcm->board_type);
-       bcm43xx_pci_read_config16(bcm, PCI_REVISION_ID,
+       if (err)
+               goto err_iounmap;
+       err = bcm43xx_pci_read_config16(bcm, PCI_REVISION_ID,
                                  &bcm->board_revision);
+       if (err)
+               goto err_iounmap;
 
        err = bcm43xx_chipset_attach(bcm);
        if (err)
@@ -3870,6 +3878,7 @@ err_pci_release:
        pci_release_regions(pci_dev);
 err_pci_disable:
        pci_disable_device(pci_dev);
+       printk(KERN_ERR PFX "Unable to attach board\n");
        goto out;
 }