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[src/trunk]: src/sys/dev/pad Return early from read if kpause is interrupted ...
details: https://anonhg.NetBSD.org/src/rev/23b15e5d90a4
branches: trunk
changeset: 825159:23b15e5d90a4
user: nat <nat%NetBSD.org@localhost>
date: Sun Jul 02 05:59:27 2017 +0000
description:
Return early from read if kpause is interrupted by a signal.
diffstat:
sys/dev/pad/pad.c | 10 +++++++---
1 files changed, 7 insertions(+), 3 deletions(-)
diffs (32 lines):
diff -r cfb0bac6e61e -r 23b15e5d90a4 sys/dev/pad/pad.c
--- a/sys/dev/pad/pad.c Sun Jul 02 02:39:18 2017 +0000
+++ b/sys/dev/pad/pad.c Sun Jul 02 05:59:27 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pad.c,v 1.39 2017/07/01 23:31:19 nat Exp $ */
+/* $NetBSD: pad.c,v 1.40 2017/07/02 05:59:27 nat Exp $ */
/*-
* Copyright (c) 2007 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pad.c,v 1.39 2017/07/01 23:31:19 nat Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pad.c,v 1.40 2017/07/02 05:59:27 nat Exp $");
#include <sys/types.h>
#include <sys/param.h>
@@ -488,8 +488,12 @@
wait_ticks = (hz * sc->sc_remainder) / 1000000;
if (wait_ticks > 0) {
sc->sc_remainder -= wait_ticks * 1000000 / hz;
- kpause("padwait", TRUE, wait_ticks,
+ err = kpause("padwait", TRUE, wait_ticks,
&sc->sc_lock);
+ if (err != EWOULDBLOCK) {
+ mutex_exit(&sc->sc_lock);
+ continue;
+ }
}
}
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