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dahdi: Allow spans to advertise if they can provide any timing.

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Some spans, specifically dynamic local spans, should never be the timing
master since they are dependent on some other timing source driving
them.

The bit in 'struct dahdi_span' is named cannot provide timing so that by
default the other drivers will set it to 0.

This is loosely related to issue #13205 but doesn't address any of the
other elements of that issue about how to allow the user to configure
what the master span order of succession is.

(issue #13205)
Reported by: biohumanoid

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Acked-by: Kinsey Moore <kmoore@digium.com>

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@9581 a0bf4364-ded3-4de4-8d8a-66a801d63aff
This commit is contained in:
Shaun Ruffell
2011-01-03 18:26:08 +00:00
parent 28f559e2ac
commit c050ca9065
3 changed files with 54 additions and 26 deletions
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1
include/dahdi/kernel.h
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@@ -863,6 +863,7 @@ struct dahdi_span {
int deflaw; /*!< Default law (DAHDI_MULAW or DAHDI_ALAW) */
int alarms; /*!< Pending alarms on span */
unsigned long flags;
u8 cannot_provide_timing:1;
int irq; /*!< IRQ for this span's hardware */
int lbo; /*!< Span Line-Buildout */
int lineconfig; /*!< Span line configuration */