rtc: rtctest: Change no IRQ detection for RTC_IRQP_READ

A call to ioctl(..., RTC_IRQP_READ, ...) should never result in
ENOTTY. All new style RTC drivers implement it and all of the old style
drivers return EINVAL when they don't support periodic IRQs.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/testing/selftests/timers/rtctest.c b/tools/testing/selftests/timers/rtctest.c
index 0cb46285ccf4..97beadf548b0 100644
--- a/tools/testing/selftests/timers/rtctest.c
+++ b/tools/testing/selftests/timers/rtctest.c
@@ -200,7 +200,7 @@ test_PIE:
         retval = ioctl(fd, RTC_IRQP_READ, &tmp);
         if (retval == -1) {
                 /* not all RTCs support periodic IRQs */
-                if (errno == ENOTTY) {
+                if (errno == EINVAL) {
                         fprintf(stderr, "\nNo periodic IRQ support\n");
                         goto done;
                 }