[PATCH][2.5] xircom_cb small cleanups

From: Zwane Mwaikambo (zwane@holomorphy.com)
Date: Tue Nov 12 2002 - 21:37:27 EST


Index: linux-2.5.47/drivers/net/tulip/xircom_cb.c
===================================================================
RCS file: /build/cvsroot/linux-2.5.47/drivers/net/tulip/xircom_cb.c,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 xircom_cb.c
--- linux-2.5.47/drivers/net/tulip/xircom_cb.c 11 Nov 2002 03:57:05 -0000 1.1.1.1
+++ linux-2.5.47/drivers/net/tulip/xircom_cb.c 13 Nov 2002 01:52:53 -0000
@@ -154,8 +154,6 @@
         .id_table = xircom_pci_table,
         .probe = xircom_probe,
         .remove = xircom_remove,
- .suspend =NULL,
- .resume =NULL
 };
 
 
@@ -201,9 +199,9 @@
 static int private_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
 {
 
- switch(cmd) {
- case SIOCETHTOOL:
- return netdev_ethtool_ioctl(dev, (void *) rq->ifr_data);
+ switch(cmd) {
+ case SIOCETHTOOL:
+ return netdev_ethtool_ioctl(dev, (void *) rq->ifr_data);
         default:
                 return -EOPNOTSUPP;
         }
@@ -221,15 +219,17 @@
         struct net_device *dev = NULL;
         struct xircom_private *private;
         unsigned char chip_rev;
- unsigned long flags;
+ unsigned long flags, io_start;
         unsigned short tmp16;
+ int rc = -ENODEV;
         enter("xircom_probe");
         
         /* First do the PCI initialisation */
 
         if (pci_enable_device(pdev))
- return -ENODEV;
+ goto exit;
 
+ rc = -ENOMEM;
         /* disable all powermanagement */
         pci_write_config_dword(pdev, PCI_POWERMGMT, 0x0000);
         
@@ -240,51 +240,48 @@
         pci_write_config_word (pdev, PCI_STATUS,tmp16);
         
         pci_read_config_byte(pdev, PCI_REVISION_ID, &chip_rev);
-
- if (!request_region(pci_resource_start(pdev, 0), 128, "xircom_cb")) {
- printk(KERN_ERR "xircom_probe: failed to allocate io-region\n");
- return -ENODEV;
+ io_start = pci_resource_start(pdev, 0);
+ if (!request_region(io_start, 128, "xircom_cb")) {
+ printk(KERN_ERR "xircom_probe: failed to allocate io-region \n");
+ goto exit;
         }
 
-
         /*
            Before changing the hardware, allocate the memory.
            This way, we can fail gracefully if not enough memory
            is available.
          */
         private = kmalloc(sizeof(*private),GFP_KERNEL);
- memset(private, 0, sizeof(struct xircom_private));
+ if (private == NULL)
+ goto out_free_region;
+
+ memset(private, 0, sizeof *private);
         
         /* Allocate the send/receive buffers */
         private->rx_buffer = pci_alloc_consistent(pdev,8192,&private->rx_dma_handle);
         
         if (private->rx_buffer == NULL) {
                  printk(KERN_ERR "xircom_probe: no memory for rx buffer \n");
- kfree(private);
- return -ENODEV;
+ goto out_free_mem;
         }
         private->tx_buffer = pci_alloc_consistent(pdev,8192,&private->tx_dma_handle);
         if (private->tx_buffer == NULL) {
                 printk(KERN_ERR "xircom_probe: no memory for tx buffer \n");
- kfree(private->rx_buffer);
- kfree(private);
- return -ENODEV;
+ goto out_free_mem;
         }
         dev = init_etherdev(dev, 0);
         if (dev == NULL) {
                 printk(KERN_ERR "xircom_probe: failed to allocate etherdev\n");
- kfree(private->rx_buffer);
- kfree(private->tx_buffer);
- kfree(private);
- return -ENODEV;
+ goto out_free_mem;
         }
         SET_MODULE_OWNER(dev);
         printk(KERN_INFO "%s: Xircom cardbus revision %i at irq %i \n", dev->name, chip_rev, pdev->irq);
 
+ rc = 0;
         private->dev = dev;
         private->pdev = pdev;
- private->io_port = pci_resource_start(pdev, 0);
- private->lock = SPIN_LOCK_UNLOCKED;
+ private->io_port = io_start;
+ spin_lock_init(&private->lock);
         dev->irq = pdev->irq;
         dev->base_addr = private->io_port;
         
@@ -307,14 +304,23 @@
         tranceiver_voodoo(private);
         
         spin_lock_irqsave(&private->lock,flags);
- activate_transmitter(private);
- activate_receiver(private);
+ activate_transmitter(private);
+ activate_receiver(private);
         spin_unlock_irqrestore(&private->lock,flags);
         
         trigger_receive(private);
-
+ goto exit;
+
+out_free_mem:
+ kfree(private->rx_buffer);
+ kfree(private->tx_buffer);
+ kfree(private);
+out_free_region:
+ release_region(io_start, 128);
+ pci_disable_device(pdev);
+exit:
         leave("xircom_probe");
- return 0;
+ return rc;
 }
 
 

-- 
function.linuxpower.ca

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