Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Tue, 29 Sep 2020 11:01:07 +0300
From:   Dan Carpenter <dan.carpenter@oracle.com>
To:     Jing Xiangfeng <jingxiangfeng@huawei.com>
Cc:     mchehab+huawei@kernel.org, gregkh@linuxfoundation.org,
        devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] staging: mfd: hi6421-spmi-pmic: Fix error return in
 hi6421_spmi_pmic_probe()
Message-ID: <20200929080107.GX4282@kadam>
References: <20200929074847.47124-1-jingxiangfeng@huawei.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20200929074847.47124-1-jingxiangfeng@huawei.com>
User-Agent: Mutt/1.9.4 (2018-02-28)
Precedence: bulk

On Tue, Sep 29, 2020 at 03:48:47PM +0800, Jing Xiangfeng wrote:
> Fix to return error code -ENOMEM from the error handling case instead
> of 0.
> 
> Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
> ---
>  drivers/staging/hikey9xx/hi6421-spmi-pmic.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/hikey9xx/hi6421-spmi-pmic.c b/drivers/staging/hikey9xx/hi6421-spmi-pmic.c
> index 64b30d263c8d..4f34a5282970 100644
> --- a/drivers/staging/hikey9xx/hi6421-spmi-pmic.c
> +++ b/drivers/staging/hikey9xx/hi6421-spmi-pmic.c
> @@ -262,8 +262,10 @@ static int hi6421_spmi_pmic_probe(struct spmi_device *pdev)
>  	hi6421_spmi_pmic_irq_prc(pmic);
>  
>  	pmic->irqs = devm_kzalloc(dev, HISI_IRQ_NUM * sizeof(int), GFP_KERNEL);
> -	if (!pmic->irqs)
> +	if (!pmic->irqs) {
> +		ret = -ENOMEM;
>  		goto irq_malloc;

It shouldn't do a goto, it should just return directly.  The goto
releases an IRQ which isn't acquired until later in the function.

regards,
dan carpenter