diff options
| author | David S. Miller <davem@davemloft.net> | 2012-06-25 15:50:32 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-06-25 15:50:32 -0700 |
| commit | e486463e82e4dca9e8f4413649088b21c9ff87e5 (patch) | |
| tree | 3fb17b54454a101416c2b22e6b4ea5a027b3c02b /drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c | |
| parent | ed3b856b69a7f3748d6917e42d462c962aaa39b8 (diff) | |
| parent | fa809e2fd6e317226c046202a88520962672eac0 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/usb/qmi_wwan.c
net/batman-adv/translation-table.c
net/ipv6/route.c
qmi_wwan.c resolution provided by Bjørn Mork.
batman-adv conflict is dealing merely with the changes
of global function names to have a proper subsystem
prefix.
ipv6's route.c conflict is merely two side-by-side additions
of network namespace methods.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c index cb7d1b2982c..daddd844691 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c @@ -787,6 +787,7 @@ void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 incval = 0; + u32 timinca = 0; u32 shift = 0; u32 cycle_speed; unsigned long flags; @@ -809,8 +810,16 @@ void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter) break; } - /* Bail if the cycle speed didn't change */ - if (adapter->cycle_speed == cycle_speed) + /* + * grab the current TIMINCA value from the register so that it can be + * double checked. If the register value has been cleared, it must be + * reset to the correct value for generating a cyclecounter. If + * TIMINCA is zero, the SYSTIME registers do not increment at all. + */ + timinca = IXGBE_READ_REG(hw, IXGBE_TIMINCA); + + /* Bail if the cycle speed didn't change and TIMINCA is non-zero */ + if (adapter->cycle_speed == cycle_speed && timinca) return; /* disable the SDP clock out */ |