diff mbox

v4l-utils: ir-ctl: give proper error message if transmitter does not exist

Message ID 1474323685-16439-3-git-send-email-sean@mess.org (mailing list archive)
State New, archived
Headers show

Commit Message

Sean Young Sept. 19, 2016, 10:21 p.m. UTC 
If a transmitter does not exist when setting using -e, you get the error:

warning: /dev/lirc0: failed to set send transmitters: Success

Signed-off-by: Sean Young <sean@mess.org>
---
 utils/ir-ctl/ir-ctl.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/utils/ir-ctl/ir-ctl.c b/utils/ir-ctl/ir-ctl.c
index 05b46a3..229330e 100644
--- a/utils/ir-ctl/ir-ctl.c
+++ b/utils/ir-ctl/ir-ctl.c
@@ -516,7 +516,9 @@  static int lirc_options(struct arguments *args, int fd, unsigned features)
 	if (args->emitters) {
 		if (features & LIRC_CAN_SET_TRANSMITTER_MASK) {
 			rc = ioctl(fd, LIRC_SET_TRANSMITTER_MASK, &args->emitters);
-			if (rc)
+			if (rc > 0)
+				fprintf(stderr, _("warning: %s: failed to set send transmitters: only %d available\n"), dev, rc);
+			else if (rc < 0)
 				fprintf(stderr, _("warning: %s: failed to set send transmitters: %m\n"), dev);
 		} else
 			fprintf(stderr, _("warning: %s: does not support setting send transmitters\n"), dev);