Re: [PATCH 3/3] kobject: fix warnings use pr_* to replace printk

[YU Bo]

Hi,
On Tue, Oct 30, 2018 at 08:01:50AM -0700, Joe Perches wrote:
> On Tue, 2018-10-30 at 08:01 -0400, Bo YU wrote:
> > Fix warning from checkpatch.pl use pr_* to replace printk
>
> If you look at msg, it can be unterminated with newline.
>
> > diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
> []
> > @@ -224,7 +224,7 @@ int kobject_synth_uevent(struct kobject *kobj, const char *buf, size_t count)
> >  out:
> >  	if (r) {
> >  		devpath = kobject_get_path(kobj, GFP_KERNEL);
> > -		printk(KERN_WARNING "synth uevent: %s: %s",
> > +		pr_warn("synth uevent: %s: %s",
> >  		       devpath ?: "unknown device",
> >  		       msg ?: "failed to send uevent");
> >  		kfree(devpath);
>
> Perhaps this block should be:
>
> diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c
> index 63d0816ab23b..0ba1197f366e 100644
> --- a/lib/kobject_uevent.c
> +++ b/lib/kobject_uevent.c
> @@ -195,12 +195,12 @@ int kobject_synth_uevent(struct kobject *kobj, const char *buf, size_t count)
> 	enum kobject_action action;
> 	const char *action_args;
> 	struct kobj_uevent_env *env;
> -	const char *msg = NULL, *devpath;
> +	const char *msg = NULL;
> 	int r;
>
> 	r = kobject_action_type(buf, count, &action, &action_args);
> 	if (r) {
> -		msg = "unknown uevent action string\n";
> +		msg = "unknown uevent action string";
> 		goto out;
> 	}
>
> @@ -212,7 +212,7 @@ int kobject_synth_uevent(struct kobject *kobj, const char *buf, size_t count)
> 	r = kobject_action_args(action_args,
> 				count - (action_args - buf), &env);
> 	if (r == -EINVAL) {
> -		msg = "incorrect uevent action arguments\n";
> +		msg = "incorrect uevent action arguments";
> 		goto out;
> 	}
>
> @@ -223,10 +223,11 @@ int kobject_synth_uevent(struct kobject *kobj, const char *buf, size_t count)
> 	kfree(env);
> out:
> 	if (r) {
> -		devpath = kobject_get_path(kobj, GFP_KERNEL);
> -		printk(KERN_WARNING "synth uevent: %s: %s",
> -		       devpath ?: "unknown device",
> -		       msg ?: "failed to send uevent");
> +		char *devpath devpath = kobject_get_path(kobj, GFP_KERNEL);
> +
> +		pr_warn("synth uevent: %s: %s\n",
> +			devpath ?: "unknown device",
> +			msg ?: "failed to send uevent");
> 		kfree(devpath);
> 	}
> 	return r;
Sorry, but i have two stupid questions to annoy you:
Q1: If i agree with your patch, here should i to do? Acked-by tag or others or nothing to do?
Q2: In fact, i do not know how to test the patch. Only to cat /sys/bus/pci/* or something?
Thanks,
>