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(parent: d02f424) | patch
cxgb4: fix large delays in PTP synchronization
authorRahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Mon, 20 Apr 2020 09:56:54 +0000 (15:26 +0530)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 29 Apr 2020 14:33:06 +0000 (16:33 +0200)
commit3b759befd7f2fa65c9f02c6e4f2d5faf00c33fe9
tree947768beb07830261188d036ec04e449a42f9badtree | snapshot
parentd02f4242650dc84843f5e636d463e291bf21d840commit | diff
cxgb4: fix large delays in PTP synchronization

[ Upstream commit bd019427bf3623ee3c7d2845cf921bbf4c14846c ]

Fetching PTP sync information from mailbox is slow and can take
up to 10 milliseconds. Reduce this unnecessary delay by directly
reading the information from the corresponding registers.

Fixes: 9c33e4208bce ("cxgb4: Add PTP Hardware Clock (PHC) support")
Signed-off-by: Manoj Malviya <manojmalviya@chelsio.com>
Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c diff | blob | history
drivers/net/ethernet/chelsio/cxgb4/t4_regs.h diff | blob | history
Domain: System / Kernel;