From: David Vrabel Date: Wed, 18 Jun 2014 09:47:27 +0000 (+0100) Subject: xen-netfront: fix oops when disconnected from backend X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=765418694bc99d91e71ede6d2889a6328da137fe;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git xen-netfront: fix oops when disconnected from backend xennet_disconnect_backend() was not correctly iterating over all the queues. Signed-off-by: David Vrabel Reviewed-by: Wei Liu Signed-off-by: David S. Miller --- diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index 5a7872ac3566..daaf1e56e41e 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -1287,7 +1287,7 @@ static irqreturn_t xennet_rx_interrupt(int irq, void *dev_id) if (likely(netif_carrier_ok(dev) && RING_HAS_UNCONSUMED_RESPONSES(&queue->rx))) - napi_schedule(&queue->napi); + napi_schedule(&queue->napi); return IRQ_HANDLED; } @@ -1437,10 +1437,11 @@ static void xennet_end_access(int ref, void *page) static void xennet_disconnect_backend(struct netfront_info *info) { unsigned int i = 0; - struct netfront_queue *queue = NULL; unsigned int num_queues = info->netdev->real_num_tx_queues; for (i = 0; i < num_queues; ++i) { + struct netfront_queue *queue = &info->queues[i]; + /* Stop old i/f to prevent errors whilst we rebuild the state. */ spin_lock_bh(&queue->rx_lock); spin_lock_irq(&queue->tx_lock);