PERFORCE change 94264 for review
Marcel Moolenaar
marcel at FreeBSD.org
Wed Mar 29 22:09:02 UTC 2006
http://perforce.freebsd.org/chv.cgi?CH=94264
Change 94264 by marcel at marcel_nfs on 2006/03/29 22:08:51
Fix braino: We keep track of line signal changes even if
the device isn't open. This means that when a device gets
opened, sc_ttypend may not be 0 and we will therefore
never schedule the SWI. Do what I intended and limit the
test to the interrupt pending bits.
Affected files ...
.. //depot/projects/uart/dev/uart/uart_core.c#50 edit
Differences ...
==== //depot/projects/uart/dev/uart/uart_core.c#50 (text+ko) ====
@@ -84,7 +84,7 @@
new = old | ipend;
} while (!atomic_cmpset_32(&sc->sc_ttypend, old, new));
- if (old == 0)
+ if ((old & SER_INT_MASK) == 0)
swi_sched(sc->sc_softih, 0);
}
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