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| author | Dongli Zhang <dongli.zhang@oracle.com> | 2016-11-02 09:04:33 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-11-02 15:33:36 -0400 |
| commit | 269ebce4531b8edc4224259a02143181a1c1d77c (patch) | |
| tree | 60b0d28e753d5a82bd4ad84f98010c75841d37bb | |
| parent | 4fd19c15decedd06d707e2691c24fce08700e2b1 (diff) | |
| download | linux-269ebce4531b8edc4224259a02143181a1c1d77c.tar.gz linux-269ebce4531b8edc4224259a02143181a1c1d77c.tar.bz2 linux-269ebce4531b8edc4224259a02143181a1c1d77c.zip | |
xen-netfront: cast grant table reference first to type int
IS_ERR_VALUE() in commit 87557efc27f6a50140fb20df06a917f368ce3c66
("xen-netfront: do not cast grant table reference to signed short") would
not return true for error code unless we cast ref first to type int.
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/xen-netfront.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/net/xen-netfront.c b/drivers/net/xen-netfront.c index 189a28dcd80d..bf2744e1e3db 100644 --- a/drivers/net/xen-netfront.c +++ b/drivers/net/xen-netfront.c @@ -304,7 +304,7 @@ static void xennet_alloc_rx_buffers(struct netfront_queue *queue) queue->rx_skbs[id] = skb; ref = gnttab_claim_grant_reference(&queue->gref_rx_head); - WARN_ON_ONCE(IS_ERR_VALUE((unsigned long)ref)); + WARN_ON_ONCE(IS_ERR_VALUE((unsigned long)(int)ref)); queue->grant_rx_ref[id] = ref; page = skb_frag_page(&skb_shinfo(skb)->frags[0]); @@ -428,7 +428,7 @@ static void xennet_tx_setup_grant(unsigned long gfn, unsigned int offset, id = get_id_from_freelist(&queue->tx_skb_freelist, queue->tx_skbs); tx = RING_GET_REQUEST(&queue->tx, queue->tx.req_prod_pvt++); ref = gnttab_claim_grant_reference(&queue->gref_tx_head); - WARN_ON_ONCE(IS_ERR_VALUE((unsigned long)ref)); + WARN_ON_ONCE(IS_ERR_VALUE((unsigned long)(int)ref)); gnttab_grant_foreign_access_ref(ref, queue->info->xbdev->otherend_id, gfn, GNTMAP_readonly); |