After the test ends, restore the PIE rate to its previous value to be less disruptive.
Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com --- tools/testing/selftests/timers/rtcpie.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/tools/testing/selftests/timers/rtcpie.c b/tools/testing/selftests/timers/rtcpie.c index ea98b1f6ac17..47b5bad1b393 100644 --- a/tools/testing/selftests/timers/rtcpie.c +++ b/tools/testing/selftests/timers/rtcpie.c @@ -28,7 +28,7 @@ static const char default_rtc[] = "/dev/rtc0"; int main(int argc, char **argv) { int i, fd, retval, irqcount = 0; - unsigned long tmp, data; + unsigned long tmp, data, old_pie_rate; const char *rtc = default_rtc; struct timeval start, end, diff;
@@ -51,7 +51,7 @@ int main(int argc, char **argv) }
/* Read periodic IRQ rate */ - retval = ioctl(fd, RTC_IRQP_READ, &tmp); + retval = ioctl(fd, RTC_IRQP_READ, &old_pie_rate); if (retval == -1) { /* not all RTCs support periodic IRQs */ if (errno == EINVAL) { @@ -61,7 +61,7 @@ int main(int argc, char **argv) perror("RTC_IRQP_READ ioctl"); exit(errno); } - fprintf(stderr, "\nPeriodic IRQ rate is %ldHz.\n", tmp); + fprintf(stderr, "\nPeriodic IRQ rate is %ldHz.\n", old_pie_rate);
fprintf(stderr, "Counting 20 interrupts at:"); fflush(stderr); @@ -124,6 +124,8 @@ int main(int argc, char **argv) }
done: + ioctl(fd, RTC_IRQP_SET, old_pie_rate); + fprintf(stderr, "\n\n\t\t\t *** Test complete ***\n");
close(fd);