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commit 117ed5c2d0f865894dd930d877f0ec28bc23d951
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Author: Miroslav Lichvar <mlichvar@redhat.com>
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Date: Tue Jan 17 14:17:41 2017 +0100
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timemaster: check support for SW time stamping.
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When an interface doesn't support HW time stamping, before falling back
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to SW time stamping, check if it's actually supported and exit with an
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error message if not.
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Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
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diff --git a/timemaster.c b/timemaster.c
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index 880b2ab..cda2d90 100644
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--- a/timemaster.c
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+++ b/timemaster.c
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@@ -674,13 +674,15 @@ static int add_ptp_source(struct ptp_domain *source,
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{
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struct config_file *config_file;
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char **command, *uds_path, **interfaces, *message_tag;
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- int i, j, num_interfaces, *phc, *phcs, hw_ts;
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+ int i, j, num_interfaces, *phc, *phcs, hw_ts, sw_ts;
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struct sk_ts_info ts_info;
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pr_debug("adding PTP domain %d", source->domain);
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hw_ts = SOF_TIMESTAMPING_TX_HARDWARE | SOF_TIMESTAMPING_RX_HARDWARE |
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SOF_TIMESTAMPING_RAW_HARDWARE;
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+ sw_ts = SOF_TIMESTAMPING_TX_SOFTWARE | SOF_TIMESTAMPING_RX_SOFTWARE |
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+ SOF_TIMESTAMPING_SOFTWARE;
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for (num_interfaces = 0;
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source->interfaces[num_interfaces]; num_interfaces++)
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@@ -702,9 +704,14 @@ static int add_ptp_source(struct ptp_domain *source,
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return 1;
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}
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- if (!ts_info.valid ||
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- ((ts_info.so_timestamping & hw_ts) != hw_ts)) {
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+ if (((ts_info.so_timestamping & hw_ts) != hw_ts)) {
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pr_debug("interface %s: no PHC", source->interfaces[i]);
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+ if ((ts_info.so_timestamping & sw_ts) != sw_ts) {
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+ pr_err("time stamping not supported on %s",
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+ source->interfaces[i]);
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+ free(phcs);
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+ return 1;
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+ }
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continue;
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}
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