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authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2018-02-06 20:47:59 +0100
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2018-03-05 09:23:37 -0800
commit0a6f2f05a2f50cdfea863887ffc3ad315fa4daf1 (patch)
treed2bc2ee4bec5e93ff0be563452b61223ab0b1b80 /drivers/net/ethernet/intel/igb/igb_main.c
parentigb: Do not call netif_device_detach() when PCIe link goes missing (diff)
downloadlinux-dev-0a6f2f05a2f50cdfea863887ffc3ad315fa4daf1.tar.xz
linux-dev-0a6f2f05a2f50cdfea863887ffc3ad315fa4daf1.zip
igb: Fix a test with HWTSTAMP_TX_ON
'HWTSTAMP_TX_ON' should be handled as a value, not as a bit mask. The modified code should behave the same, because HWTSTAMP_TX_ON is 1 and no other possible values of 'tx_type' would match the test. However, this is more future-proof, should other values be allowed one day. See 'struct hwtstamp_config' in 'include/uapi/linux/net_tstamp.h' This fixes a warning reported by smatch: igb_xmit_frame_ring() warn: bit shifter 'HWTSTAMP_TX_ON' used for logical '&' Fixes: 26bd4e2db06be ("igb: protect TX timestamping from API misuse") Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Tested-by: Aaron Brown <aaron.f.brown@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/igb/igb_main.c')
-rw-r--r--drivers/net/ethernet/intel/igb/igb_main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index 229b72aab17d..715bb32e6901 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -5749,7 +5749,7 @@ netdev_tx_t igb_xmit_frame_ring(struct sk_buff *skb,
if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
struct igb_adapter *adapter = netdev_priv(tx_ring->netdev);
- if (adapter->tstamp_config.tx_type & HWTSTAMP_TX_ON &&
+ if (adapter->tstamp_config.tx_type == HWTSTAMP_TX_ON &&
!test_and_set_bit_lock(__IGB_PTP_TX_IN_PROGRESS,
&adapter->state)) {
skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;