Date: Fri, 25 Oct 2019 14:20:59 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r354069 - head/sys/dev/ow Message-ID: <201910251420.x9PEKxxS083902@repo.freebsd.org>
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Author: avg Date: Fri Oct 25 14:20:59 2019 New Revision: 354069 URL: https://svnweb.freebsd.org/changeset/base/354069 Log: owc_gpiobus_read_data: disable preemption earlier Now this is done before starting the low pulse that has rather tight timing. Reviewed by: imp (D22108) MFC after: 2 weeks Modified: head/sys/dev/ow/owc_gpiobus.c Modified: head/sys/dev/ow/owc_gpiobus.c ============================================================================== --- head/sys/dev/ow/owc_gpiobus.c Fri Oct 25 13:47:17 2019 (r354068) +++ head/sys/dev/ow/owc_gpiobus.c Fri Oct 25 14:20:59 2019 (r354069) @@ -279,6 +279,8 @@ owc_gpiobus_read_data(device_t dev, struct ow_timing * if (error != 0) return (error); + critical_enter(); + /* Force low for t_lowr microseconds */ then = sbinuptime(); OUTPIN(sc); @@ -291,7 +293,6 @@ owc_gpiobus_read_data(device_t dev, struct ow_timing * * master's pushing the line low. */ INPIN(sc); - critical_enter(); do { now = sbinuptime(); GETPIN(sc, &sample);
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