be2net: Fix to avoid firmware update when interface is not open.

Since interrupts are enabled only when open is called on the interface,
Attempting a firmware update operation when interface is down could lead to
partial success or failure of operation. This fix fails the request if
netif_running is false.

Signed-off-by: Sarveshwar Bandi <Sarveshwar.Bandi@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/benet/be_main.c b/drivers/net/benet/be_main.c
index c36cd2f..93354ee 100644 (file)
--- a/drivers/net/benet/be_main.c
+++ b/drivers/net/benet/be_main.c
@@ -2458,6 +2458,12 @@ int be_load_fw(struct be_adapter *adapter, u8 *func)
        int status, i = 0, num_imgs = 0;
        const u8 *p;
 
+       if (!netif_running(adapter->netdev)) {
+               dev_err(&adapter->pdev->dev,
+                       "Firmware load not allowed (interface is down)\n");
+               return -EPERM;
+       }
+
        strcpy(fw_file, func);
 
        status = request_firmware(&fw, fw_file, &adapter->pdev->dev);