fec: Invert the order of function calls in fec_restart()
authorFabio Estevam <fabio.estevam@freescale.com>
Wed, 15 May 2013 07:06:27 +0000 (07:06 +0000)
committerDavid S. Miller <davem@davemloft.net>
Wed, 15 May 2013 21:42:15 +0000 (14:42 -0700)
commit1ed0d56c1d5ff07a5d57e6467621f9a0c09b0b65
tree55b88d5fd4bc5d6d4be8cdbd40971d67c08d8c3b
parent3169134478a9638baf0dbb4fdca5a0718cbe8e27
fec: Invert the order of function calls in fec_restart()

commit 54309fa6 ("net: fec: fix kernel oops when plug/unplug cable many times")
introduced the following 'if' block in the beginning of fec_start():

if (netif_running(ndev)) {
netif_device_detach(ndev);
napi_disable(&fep->napi);
netif_stop_queue(ndev);
netif_tx_lock_bh(ndev);
}

Then later in the end of fec_restart() there is another block that calls the
opposite of each one of these functions.

The correct approach would be to also call them with in the reverse order, so
that we have as result:

if (netif_running(ndev)) {
netif_tx_unlock_bh(ndev);
netif_wake_queue(ndev);
napi_enable(&fep->napi);
netif_device_attach(ndev);
}

Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/freescale/fec_main.c