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Re: [PATCH] PM / OPP: Handle return value of kasprintf

From Joe Perches <joe@perches.com>
Newsgroups linux.kernel
Subject Re: [PATCH] PM / OPP: Handle return value of kasprintf
Date 2017-09-20 13:20 +0200
Message-ID <urLcR-2iJ-13@gated-at.bofh.it> (permalink)
References <urHiX-8bg-49@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, 2017-09-20 at 12:29 +0530, Arvind Yadav wrote:
> kasprintf() can fail here and we must check its return value.
[]
> diff --git a/drivers/base/power/opp/debugfs.c b/drivers/base/power/opp/debugfs.c
[]
> @@ -45,7 +45,8 @@ static bool opp_debug_create_supplies(struct dev_pm_opp *opp,
>  
>  	for (i = 0; i < opp_table->regulator_count; i++) {
>  		name = kasprintf(GFP_KERNEL, "supply-%d", i);
> -
> +		if (!name)
> +			return false;
>  		/* Create per-opp directory */
>  		d = debugfs_create_dir(name, pdentry);

Probably more sensible to avoid the kasprintf/kfree
and just have
	char name[20];
on the stack

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Thread

[PATCH] PM / OPP: Handle return value of kasprintf Arvind Yadav <arvind.yadav.cs@gmail.com> - 2017-09-20 09:10 +0200
  Re: [PATCH] PM / OPP: Handle return value of kasprintf Joe Perches <joe@perches.com> - 2017-09-20 13:20 +0200
    Re: [PATCH] PM / OPP: Handle return value of kasprintf Viresh Kumar <viresh.kumar@linaro.org> - 2017-09-20 16:50 +0200
      Re: [PATCH] PM / OPP: Handle return value of kasprintf arvind <arvind.yadav.cs@gmail.com> - 2017-09-20 19:00 +0200

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