drivers/net/tlan.c: compilation warning fix

Add a check for the pci_register_driver() return value.  Removed unused
variable pad_allocated.

The aim of this patch is to remove the following warning messages:
drivers/net/tlan.c: In function 'tlan_probe':
drivers/net/tlan.c:486: warning: ignoring return value of 'pci_register_driver', declared with attribute warn_unused_result

Signed-off-by: Leonardo Potenza <lpotenza@inwind.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 18 insertions, 7 deletions

diff --git a/drivers/net/tlan.c b/drivers/net/tlan.c
index c99ce74a7aff..3af5b92b48c8 100644
--- a/drivers/net/tlan.c
+++ b/drivers/net/tlan.c
@@ -465,7 +465,7 @@ static struct pci_driver tlan_driver = {
 
 static int __init tlan_probe(void)
 {
-        static int      pad_allocated;
+        int rc = -ENODEV;
 
         printk(KERN_INFO "%s", tlan_banner);
 
@@ -473,17 +473,22 @@ static int __init tlan_probe(void)
 
         if (TLanPadBuffer == NULL) {
                 printk(KERN_ERR "TLAN: Could not allocate memory for pad buffer.\n");
-                return -ENOMEM;
+                rc = -ENOMEM;
+                goto err_out;
         }
 
         memset(TLanPadBuffer, 0, TLAN_MIN_FRAME_SIZE);
-        pad_allocated = 1;
 
         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
 
         /* Use new style PCI probing. Now the kernel will
            do most of this for us */
-        pci_register_driver(&tlan_driver);
+        rc = pci_register_driver(&tlan_driver);
+
+        if (rc != 0) {
+                printk(KERN_ERR "TLAN: Could not register pci driver.\n");
+                goto err_out_pci_free;
+        }
 
         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
         TLan_EisaProbe();
@@ -493,11 +498,17 @@ static int __init tlan_probe(void)
                  tlan_have_pci, tlan_have_eisa);
 
         if (TLanDevicesInstalled == 0) {
-                pci_unregister_driver(&tlan_driver);
-                pci_free_consistent(NULL, TLAN_MIN_FRAME_SIZE, TLanPadBuffer, TLanPadBufferDMA);
-                return -ENODEV;
+                rc = -ENODEV;
+                goto  err_out_pci_unreg;
         }
         return 0;
+
+err_out_pci_unreg:
+        pci_unregister_driver(&tlan_driver);
+err_out_pci_free:
+        pci_free_consistent(NULL, TLAN_MIN_FRAME_SIZE, TLanPadBuffer, TLanPadBufferDMA);
+err_out:
+        return rc;
 }