linux-kernel - Re: [PATCH] cpufreq: sun50i: fix error returns in dt_has_supported

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Message-ID: <1882679.tdWV9SEqCh@jernej-laptop>
Date: Wed, 24 Apr 2024 21:01:16 +0200
From: Jernej Škrabec <jernej.skrabec@...il.com>
To: Andre Przywara <andre.przywara@....com>,
 Dan Carpenter <dan.carpenter@...aro.org>
Cc: Yangtao Li <tiny.windzz@...il.com>,
 "Rafael J. Wysocki" <rafael@...nel.org>,
 Viresh Kumar <viresh.kumar@...aro.org>, Chen-Yu Tsai <wens@...e.org>,
 Samuel Holland <samuel@...lland.org>, linux-pm@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
 linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject:
 Re: [PATCH] cpufreq: sun50i: fix error returns in dt_has_supported_hw()

Dne sreda, 24. april 2024 ob 13:40:11 GMT +2 je Dan Carpenter napisal(a):
> The dt_has_supported_hw() function returns type bool.  That means these
> negative error codes are cast to true but the function should return
> false instead.
> 
> Fixes: fa5aec9561cf ("cpufreq: sun50i: Add support for opp_supported_hw")
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>

Reviewed-by: Jernej Skrabec <jernej.skrabec@...il.com>

Best regards,
Jernej

> ---
>  drivers/cpufreq/sun50i-cpufreq-nvmem.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/cpufreq/sun50i-cpufreq-nvmem.c b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
> index cd50cea16a87..0b882765cd66 100644
> --- a/drivers/cpufreq/sun50i-cpufreq-nvmem.c
> +++ b/drivers/cpufreq/sun50i-cpufreq-nvmem.c
> @@ -136,11 +136,11 @@ static bool dt_has_supported_hw(void)
>  
>  	cpu_dev = get_cpu_device(0);
>  	if (!cpu_dev)
> -		return -ENODEV;
> +		return false;
>  
>  	np = dev_pm_opp_of_get_opp_desc_node(cpu_dev);
>  	if (!np)
> -		return -ENOENT;
> +		return false;
>  
>  	for_each_child_of_node(np, opp) {
>  		if (of_find_property(opp, "opp-supported-hw", NULL)) {
>