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.


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