diff options
author | Shaun Ruffell <sruffell@digium.com> | 2009-05-01 16:42:45 +0000 |
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committer | Shaun Ruffell <sruffell@digium.com> | 2009-05-01 16:42:45 +0000 |
commit | 17163c10595b9c4ed8889df89e23dba9342c2177 (patch) | |
tree | f9426f566a78c86be7c464caa694f97dabd70306 /drivers/dahdi/wctc4xxp | |
parent | 4038d31bbefc9940444b23d156f57047bba89e3e (diff) |
wctc4xxp: spin_trylock_irqsave is not defined on some kernels.
DAHDI-253
git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@6551 a0bf4364-ded3-4de4-8d8a-66a801d63aff
Diffstat (limited to 'drivers/dahdi/wctc4xxp')
-rw-r--r-- | drivers/dahdi/wctc4xxp/base.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/dahdi/wctc4xxp/base.c b/drivers/dahdi/wctc4xxp/base.c index aea02d6..3942251 100644 --- a/drivers/dahdi/wctc4xxp/base.c +++ b/drivers/dahdi/wctc4xxp/base.c @@ -2049,8 +2049,14 @@ wctc4xxp_handle_receive_ring(struct wcdte *wc) /* If we can't grab this lock, another thread must already be checking * the receive ring...so we should just finish up, and we'll try again * later. */ +#if defined(spin_trylock_irqsave) if (!spin_trylock_irqsave(&wc->rx_lock, flags)) return 0; +#else + if (spin_is_locked(&wc->rx_lock)) + return 0; + spin_lock_irqsave(&wc->rx_lock, flags); +#endif while ((cmd = wctc4xxp_retrieve(wc->rxd))) { ++count; |