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path: root/tools/testing/selftests/timers/rtctest.c
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Diffstat (limited to 'tools/testing/selftests/timers/rtctest.c')
-rw-r--r--tools/testing/selftests/timers/rtctest.c83
1 files changed, 4 insertions, 79 deletions
diff --git a/tools/testing/selftests/timers/rtctest.c b/tools/testing/selftests/timers/rtctest.c
index 411eff625e66..6e17b96551ec 100644
--- a/tools/testing/selftests/timers/rtctest.c
+++ b/tools/testing/selftests/timers/rtctest.c
@@ -94,10 +94,9 @@ static int compare_dates(struct rtc_time *a, struct rtc_time *b)
int main(int argc, char **argv)
{
int i, fd, retval, irqcount = 0, dangerous = 0;
- unsigned long tmp, data;
+ unsigned long data;
struct rtc_time rtc_tm;
const char *rtc = default_rtc;
- struct timeval start, end, diff;
switch (argc) {
case 3:
@@ -211,7 +210,7 @@ test_READ:
if (errno == EINVAL) {
fprintf(stderr,
"\n...Alarm IRQs not supported.\n");
- goto test_PIE;
+ goto test_DATE;
}
perror("RTC_ALM_SET ioctl");
@@ -224,7 +223,7 @@ test_READ:
if (errno == EINVAL) {
fprintf(stderr,
"\n...EINVAL reading current alarm setting.\n");
- goto test_PIE;
+ goto test_DATE;
}
perror("RTC_ALM_READ ioctl");
exit(errno);
@@ -239,7 +238,7 @@ test_READ:
if (errno == EINVAL || errno == EIO) {
fprintf(stderr,
"\n...Alarm IRQs not supported.\n");
- goto test_PIE;
+ goto test_DATE;
}
perror("RTC_AIE_ON ioctl");
@@ -264,80 +263,6 @@ test_READ:
exit(errno);
}
-test_PIE:
- /* Read periodic IRQ rate */
- retval = ioctl(fd, RTC_IRQP_READ, &tmp);
- if (retval == -1) {
- /* not all RTCs support periodic IRQs */
- if (errno == EINVAL) {
- fprintf(stderr, "\nNo periodic IRQ support\n");
- goto test_DATE;
- }
- perror("RTC_IRQP_READ ioctl");
- exit(errno);
- }
- fprintf(stderr, "\nPeriodic IRQ rate is %ldHz.\n", tmp);
-
- fprintf(stderr, "Counting 20 interrupts at:");
- fflush(stderr);
-
- /* The frequencies 128Hz, 256Hz, ... 8192Hz are only allowed for root. */
- for (tmp=2; tmp<=64; tmp*=2) {
-
- retval = ioctl(fd, RTC_IRQP_SET, tmp);
- if (retval == -1) {
- /* not all RTCs can change their periodic IRQ rate */
- if (errno == EINVAL) {
- fprintf(stderr,
- "\n...Periodic IRQ rate is fixed\n");
- goto test_DATE;
- }
- perror("RTC_IRQP_SET ioctl");
- exit(errno);
- }
-
- fprintf(stderr, "\n%ldHz:\t", tmp);
- fflush(stderr);
-
- /* Enable periodic interrupts */
- retval = ioctl(fd, RTC_PIE_ON, 0);
- if (retval == -1) {
- perror("RTC_PIE_ON ioctl");
- exit(errno);
- }
-
- for (i=1; i<21; i++) {
- gettimeofday(&start, NULL);
- /* This blocks */
- retval = read(fd, &data, sizeof(unsigned long));
- if (retval == -1) {
- perror("read");
- exit(errno);
- }
- gettimeofday(&end, NULL);
- timersub(&end, &start, &diff);
- if (diff.tv_sec > 0 ||
- diff.tv_usec > ((1000000L / tmp) * 1.10)) {
- fprintf(stderr, "\nPIE delta error: %ld.%06ld should be close to 0.%06ld\n",
- diff.tv_sec, diff.tv_usec,
- (1000000L / tmp));
- fflush(stdout);
- exit(-1);
- }
-
- fprintf(stderr, " %d",i);
- fflush(stderr);
- irqcount++;
- }
-
- /* Disable periodic interrupts */
- retval = ioctl(fd, RTC_PIE_OFF, 0);
- if (retval == -1) {
- perror("RTC_PIE_OFF ioctl");
- exit(errno);
- }
- }
-
test_DATE:
if (!dangerous)
goto done;