From: Andrey Smirnov <andrew.smirnov@gmail.com>
Date: Tue, 21 Jun 2016 07:22:49 +0000 (-0700)
Subject: rtc: rtctest: Change no IRQ detection for RTC_IRQP_READ
X-Git-Tag: v4.8-rc1~28^2~35
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=519efa98051717479ff3d0b6be996e112e7a87ff;p=linux.git

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>
---

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 @@ int main(int argc, char **argv)
 	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;
 		}