diff options
| -rw-r--r-- | drivers/ptp/ptp_qoriq.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/ptp/ptp_qoriq.c b/drivers/ptp/ptp_qoriq.c index a577218d1ab7..a3062cd4d174 100644 --- a/drivers/ptp/ptp_qoriq.c +++ b/drivers/ptp/ptp_qoriq.c @@ -81,7 +81,7 @@ static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index, struct ptp_clock_event event; void __iomem *reg_etts_l; void __iomem *reg_etts_h; - u32 valid, stat, lo, hi; + u32 valid, lo, hi; switch (index) { case 0: @@ -101,6 +101,10 @@ static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index, event.type = PTP_CLOCK_EXTTS; event.index = index; + if (ptp_qoriq->extts_fifo_support) + if (!(ptp_qoriq->read(®s->ctrl_regs->tmr_stat) & valid)) + return 0; + do { lo = ptp_qoriq->read(reg_etts_l); hi = ptp_qoriq->read(reg_etts_h); @@ -111,8 +115,9 @@ static int extts_clean_up(struct ptp_qoriq *ptp_qoriq, int index, ptp_clock_event(ptp_qoriq->clock, &event); } - stat = ptp_qoriq->read(®s->ctrl_regs->tmr_stat); - } while (ptp_qoriq->extts_fifo_support && (stat & valid)); + if (!ptp_qoriq->extts_fifo_support) + break; + } while (ptp_qoriq->read(®s->ctrl_regs->tmr_stat) & valid); return 0; } |