diff options
Diffstat (limited to 'drivers/net/hyperv/netvsc.c')
| -rw-r--r-- | drivers/net/hyperv/netvsc.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 4c1d8cca247b..15ef713d96c0 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -236,6 +236,7 @@ static int netvsc_init_buf(struct hv_device *device) struct netvsc_device *net_device; struct nvsp_message *init_packet; struct net_device *ndev; + size_t map_words; int node; net_device = get_outbound_net_device(device); @@ -401,11 +402,9 @@ static int netvsc_init_buf(struct hv_device *device) net_device->send_section_size, net_device->send_section_cnt); /* Setup state for managing the send buffer. */ - net_device->map_words = DIV_ROUND_UP(net_device->send_section_cnt, - BITS_PER_LONG); + map_words = DIV_ROUND_UP(net_device->send_section_cnt, BITS_PER_LONG); - net_device->send_section_map = kcalloc(net_device->map_words, - sizeof(ulong), GFP_KERNEL); + net_device->send_section_map = kcalloc(map_words, sizeof(ulong), GFP_KERNEL); if (net_device->send_section_map == NULL) { ret = -ENOMEM; goto cleanup; @@ -683,7 +682,7 @@ static u32 netvsc_get_next_send_section(struct netvsc_device *net_device) unsigned long *map_addr = net_device->send_section_map; unsigned int i; - for_each_clear_bit(i, map_addr, net_device->map_words) { + for_each_clear_bit(i, map_addr, net_device->send_section_cnt) { if (sync_test_and_set_bit(i, map_addr) == 0) return i; } @@ -1231,8 +1230,11 @@ void netvsc_channel_cb(void *context) return; net_device = net_device_to_netvsc_device(ndev); - if (unlikely(net_device->destroy) && - netvsc_channel_idle(net_device, q_idx)) + if (unlikely(!net_device)) + return; + + if (unlikely(net_device->destroy && + netvsc_channel_idle(net_device, q_idx))) return; /* commit_rd_index() -> hv_signal_on_read() needs this. */ |