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Message-Id: <20240820072341.41153-3-rajkumarvad@gmail.com>
Date: Tue, 20 Aug 2024 12:53:41 +0530
From: Rajkumar Vadhyar <rajkumarvad@...il.com>
To: jacek.anaszewski@...il.com,
rbmarliere@...il.com,
skhan@...uxfoundation.org
Cc: linux-kernel@...r.kernel.org,
Rajkumar Vadhyar <rajkumarvad@...il.com>
Subject: [PATCH 2/2] tools/leds: Add '-h' & '--help' cmd options to led_hw_brightness_mon
Add '-h' and '--help' command line options to led_hw_brightness_mon
Signed-off-by: Rajkumar Vadhyar <rajkumarvad@...il.com>
---
tools/leds/led_hw_brightness_mon.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/leds/led_hw_brightness_mon.c b/tools/leds/led_hw_brightness_mon.c
index eb65ae988839..712a4f8edb98 100644
--- a/tools/leds/led_hw_brightness_mon.c
+++ b/tools/leds/led_hw_brightness_mon.c
@@ -12,6 +12,7 @@
* CTRL+C will exit.
*/
+#define USAGE_LED_HW_BRIGHTNESS_MON "Usage: ./led_hw_brightness_mon <device-name>\n"
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
@@ -36,6 +37,11 @@ int main(int argc, char const *argv[])
return 1;
}
+ if (!(strcmp(argv[1], "-h")) || !(strcmp(argv[1], "--help"))) {
+ fprintf(stderr, USAGE_LED_HW_BRIGHTNESS_MON);
+ return 1;
+ }
+
snprintf(brightness_file_path, LED_MAX_NAME_SIZE,
"/sys/class/leds/%s/brightness_hw_changed", argv[1]);
--
2.40.1
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