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authorYangbo Lu <yangbo.lu@nxp.com>2019-12-12 18:08:04 +0800
committerDavid S. Miller <davem@davemloft.net>2019-12-16 15:56:41 -0800
commit10bc877c762339b8501a5b397137cf2f47cde575 (patch)
treeda78b7655e4d02ba7aabb8a347d0c37ba474a73e /include/linux/irq.h
parent0e627190563e8be6fc9c2cc2a8a3c14bd961754c (diff)
ptp_qoriq: check valid status before reading extts fifo
For PTP timer supporting external trigger timestamp FIFO, there is a valid bit in TMR_STAT register indicating the timestamp is available. For PTP timer without FIFO, there is not TMR_STAT register. This patch is to check the valid bit for the FIFO before reading timestamp, and to avoid operating TMR_STAT register for PTP timer without the FIFO. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/irq.h')
0 files changed, 0 insertions, 0 deletions