On 25/10/2017 10:48, Andrew Jones wrote: > I'd rather we continue to exit gracefully from chr_testdev_exit(), > allowing callers to unconditionally call it, and then do their own > "shouldn't have happened" printing, or fallback to another way to > exit. That way when a unit test is run without the chr-testdev > provided, exit() can still work, just differently. Granted we only > have halt() for that fallback right now, but I've exploited the fact > that chr_testdev_exit() will just return, without the chr-testdev > device present, several times in temporary hacks. Sure, that's certainly okay. The patch is even simpler, and I should really have sent this one first: diff --git a/lib/chr-testdev.c b/lib/chr-testdev.c index c19424f..1450826 100644 --- a/lib/chr-testdev.c +++ b/lib/chr-testdev.c @@ -30,16 +30,15 @@ static void __testdev_send(char *buf, unsigned int len) void chr_testdev_exit(int code) { unsigned int len; - char buf[8]; - - snprintf(buf, sizeof(buf), "%dq", code); - len = strlen(buf); + static char buf[8]; spin_lock(&lock); - if (!vcon) goto out; + snprintf(buf, sizeof(buf), "%dq", code); + len = strlen(buf); + __testdev_send(buf, len); out: Paolo > > Thanks, > drew > > >> } >> >> void chr_testdev_init(void) >> -- >> 2.14.2 >> >>