dm9000: NULL dereferences on error in probe()

The dm9000_release_board() function is called with NULL ->data_req and
->addr_req pointers if dm9000_probe() fails.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c
index 13723c96d1a2..23084fb2090e 100644
--- a/drivers/net/ethernet/davicom/dm9000.c
+++ b/drivers/net/ethernet/davicom/dm9000.c
@@ -817,10 +817,12 @@ dm9000_release_board(struct platform_device *pdev, struct board_info *db)
 
         /* release the resources */
 
-        release_resource(db->data_req);
+        if (db->data_req)
+                release_resource(db->data_req);
         kfree(db->data_req);
 
-        release_resource(db->addr_req);
+        if (db->addr_req)
+                release_resource(db->addr_req);
         kfree(db->addr_req);
 }