85 lines
2.7 KiB
Diff
85 lines
2.7 KiB
Diff
From e4fd6a930213e6f0f009eb070d51b1e14db60d1b Mon Sep 17 00:00:00 2001
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From: Miroslav Lichvar <mlichvar@redhat.com>
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Date: Wed, 18 May 2022 11:33:38 +0200
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Subject: [PATCH 10/54] phc2sys: Don't exit when reading of PHC fails with EBUSY.
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Reading of the PHC can occasionally fail with some drivers, e.g. the ice
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driver returns EBUSY when it fails to get a lock. Continue in the loop
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instead of exiting on the error.
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Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
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[ commit e8dc364f9fd5fbdac5d2c5e433f28e9da0028d49 upstream
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We drop two hunks of it, namely the stuff that applies to
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clockadj_compare, because they apply to the source code
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ahead of baseline currently used by StarlingX ]
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Signed-off-by: Douglas Henrique Koerich <douglashenrique.koerich@windriver.com>
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Signed-off-by: Andre Mauricio Zelak <andre.zelak@windriver.com>
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---
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phc2sys.c | 31 +++++++++++++++++++------------
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1 file changed, 19 insertions(+), 12 deletions(-)
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diff --git a/phc2sys.c b/phc2sys.c
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index 44d6872..7959015 100644
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--- a/phc2sys.c
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+++ b/phc2sys.c
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@@ -722,6 +722,7 @@ static int do_loop(struct phc2sys_private *priv, int subscriptions)
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struct clock *clock;
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uint64_t ts;
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int64_t offset, delay;
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+ int err;
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interval.tv_sec = priv->phc_interval;
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interval.tv_nsec = (priv->phc_interval - interval.tv_sec) * 1e9;
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@@ -765,28 +766,34 @@ static int do_loop(struct phc2sys_private *priv, int subscriptions)
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if (clock->clkid == CLOCK_REALTIME &&
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priv->master->sysoff_method >= 0) {
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/* use sysoff */
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- if (sysoff_measure(CLOCKID_TO_FD(priv->master->clkid),
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- priv->master->sysoff_method,
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- priv->phc_readings,
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- &offset, &ts, &delay) < 0)
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- return -1;
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+ err = sysoff_measure(CLOCKID_TO_FD(priv->master->clkid),
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+ priv->master->sysoff_method,
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+ priv->phc_readings,
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+ &offset, &ts, &delay);
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} else if (priv->master->clkid == CLOCK_REALTIME &&
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clock->sysoff_method >= 0) {
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/* use reversed sysoff */
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- if (sysoff_measure(CLOCKID_TO_FD(clock->clkid),
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- clock->sysoff_method,
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- priv->phc_readings,
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- &offset, &ts, &delay) < 0)
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- return -1;
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- offset = -offset;
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- ts += offset;
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+ err = sysoff_measure(CLOCKID_TO_FD(clock->clkid),
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+ clock->sysoff_method,
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+ priv->phc_readings,
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+ &offset, &ts, &delay);
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+ if (!err) {
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+ offset = -offset;
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+ ts += offset;
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+ }
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} else {
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+ err = 0;
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/* use phc */
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if (!read_phc(priv->master->clkid, clock->clkid,
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priv->phc_readings,
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&offset, &ts, &delay))
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continue;
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}
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+ if (err == -EBUSY)
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+ continue;
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+ if (err)
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+ return -1;
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+
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update_clock(priv, clock, offset, ts, delay);
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}
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}
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--
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2.29.2
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