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From: YU Bo <tsu.yubo@gmail.com>
To: Joe Perches <joe@perches.com>
Cc: gregkh@linuxfoundation.org, rafael@kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] kobject: fix warnings use pr_* to replace  printk
Date: Thu, 1 Nov 2018 07:24:12 -0400	[thread overview]
Message-ID: <20181101112411.4itilpv7mruybiat@yubo-2> (raw)
In-Reply-To: <4229ff1aa3d11cf302f6d0a4eec8e8f8f2bb919b.camel@perches.com>

On Wed, Oct 31, 2018 at 09:48:15AM -0700, Joe Perches wrote:
>On Wed, 2018-10-31 at 09:41 -0400, YU Bo wrote:
>> 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?
>
>Send V2 with content and explanation of what
>it does and why.
>
>> Q2: In fact, i do not know how to test the patch. Only to cat /sys/bus/pci/* or something?
>
>That wouldn't work as these go to dmesg only on
>certain conditions.
>
>It's a trivial patch, obviously correct.
Thank you, joe, i will do.
>
>

      reply	other threads:[~2018-11-01 11:24 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-30 12:01 [PATCH 0/3] kobject: fix warnings from ehcekpatch.pl Bo YU
2018-10-30 12:01 ` [PATCH 1/3] kobject: drop unnecessary cast "%llu" for u64 Bo YU
2018-10-30 12:01 ` [PATCH 2/3] kobject: Fix warnings in lib/kobject_uevent.c Bo YU
2018-10-30 12:01 ` [PATCH 3/3] kobject: fix warnings use pr_* to replace printk Bo YU
2018-10-30 15:01   ` Joe Perches
2018-10-31 13:41     ` YU Bo
2018-10-31 16:48       ` Joe Perches
2018-11-01 11:24         ` YU Bo [this message]

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