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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2018-02-06 22:47:59 +0300 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2018-03-05 20:23:37 +0300 |
| commit | 0a6f2f05a2f50cdfea863887ffc3ad315fa4daf1 (patch) | |
| tree | d2bc2ee4bec5e93ff0be563452b61223ab0b1b80 /drivers/net/ethernet/intel/igb | |
| parent | 17a0b9add6e954b0a6c0108775df6584886b3b21 (diff) | |
| download | linux-0a6f2f05a2f50cdfea863887ffc3ad315fa4daf1.tar.xz | |
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')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 2 |
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; |