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Commit 6d73ceab authored by Alexandre Belloni's avatar Alexandre Belloni Committed by Shuah Khan (Samsung OSG)
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selftests: timers: rtcpie: restore previous PIE rate 



After the test ends, restore the PIE rate to its previous value to be less
disruptive.

Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: default avatarShuah Khan (Samsung OSG) <shuah@kernel.org>
parent 843b20bc

tools/testing/selftests/timers/rtcpie.c

+5 −3
Original line number Diff line number Diff line
@@ -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);