From 772e1198dd547ca0b382be708e0e2f3668b616e2 Mon Sep 17 00:00:00 2001
From: Peter Kovary <kovary.p23@gmail.com>
Date: Sat, 19 Jun 2021 12:55:49 +0100
Subject: [PATCH] Return error from `softPwmCreate` if `pthread_create` fails

If `pthread_create` fails, `newPin` will never get reset to -1 and process would hang. This change will return from `softPwmCreate` immediately if  `pthread_create` returns a non-zero value and avoid hanging forever.
---
 wiringPi/softPwm.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/wiringPi/softPwm.c b/wiringPi/softPwm.c
index d99fa00..9e0aa37 100644
--- a/wiringPi/softPwm.c
+++ b/wiringPi/softPwm.c
@@ -153,6 +153,9 @@ int softPwmCreate (int pin, int initialValue, int pwmRange)
   newPin   = pin ;
   res      = pthread_create (&myThread, NULL, softPwmThread, (void *)passPin) ;
 
+  if (res != 0)
+    return res ;
+  
   while (newPin != -1)
     delay (1) ;