From: Guo Zhengkui <guozhengkui@vivo.com>
To: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Andy Gross <agross@kernel.org>,
Kishon Vijay Abraham I <kishon@ti.com>,
Vinod Koul <vkoul@kernel.org>,
"open list:ARM/QUALCOMM SUPPORT" <linux-arm-msm@vger.kernel.org>,
"open list:GENERIC PHY FRAMEWORK" <linux-phy@lists.infradead.org>,
open list <linux-kernel@vger.kernel.org>,
kernel <kernel@vivo.com>
Subject: Re: [PATCH] phy: qcom: fix bug: application of sizeof to pointer
Date: Wed, 8 Dec 2021 14:56:34 +0800 [thread overview]
Message-ID: <f0a6ae0e-4a6c-7db5-7924-a957f1a0b70b@vivo.com> (raw)
In-Reply-To: <AO6AKgBME5Y4PNQLIg0Wlap9.9.1638889943341.Hmail.guozhengkui@vivo.com.@PFlhOTZLT3luc080NzhjVnhAcmlwcGVyPg==>
On 2021/12/7 23:13, Bjorn Andersson wrote:
> On Tue 07 Dec 05:16 PST 2021, Guo Zhengkui wrote:
>
>> Fix following coccicheck error:
>> ./drivers/phy/qualcomm/phy-qcom-edp.c:574:31-37:
>> ERROR: application of sizeof to pointer.
>>
>> Use sizeof(*data) instead.
>>
>> Signed-off-by: Guo Zhengkui <guozhengkui@vivo.com>
>> ---
>> drivers/phy/qualcomm/phy-qcom-edp.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/phy/qualcomm/phy-qcom-edp.c b/drivers/phy/qualcomm/phy-qcom-edp.c
>> index 17d5653b661d..5fe4eab9cac1 100644
>> --- a/drivers/phy/qualcomm/phy-qcom-edp.c
>> +++ b/drivers/phy/qualcomm/phy-qcom-edp.c
>> @@ -571,7 +571,7 @@ static int qcom_edp_clks_register(struct qcom_edp *edp, struct device_node *np)
>> struct clk_init_data init = { };
>> int ret;
>>
>> - data = devm_kzalloc(edp->dev, sizeof(data), GFP_KERNEL);
>> + data = devm_kzalloc(edp->dev, sizeof(*data), GFP_KERNEL);
>
> Ouch, thanks for catching that!
>
> But the clk_hw_onecell_data actually has a variable size array at the
> end and as you can see further down I store 2 items in that array.
>
> So that sizeof should be struct_size(data, hws, 2)
>
> Would you be willing to update your patch with that?
>
OK, I will commit another patch. Do you mind I add a "Suggested-by" tag
of your name in the new patch?
Zhengkui
> And please add:
> Fixes: f199223cb490 ("phy: qcom: Introduce new eDP PHY driver")
>
> Regards,
> Bjorn
>
>> if (!data)
>> return -ENOMEM;
>>
>> --
>> 2.20.1
>>
next prev parent reply other threads:[~2021-12-08 6:56 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-07 13:16 [PATCH] phy: qcom: fix bug: application of sizeof to pointer Guo Zhengkui
2021-12-07 15:13 ` Bjorn Andersson
[not found] ` <AO6AKgBME5Y4PNQLIg0Wlap9.9.1638889943341.Hmail.guozhengkui@vivo.com.@PFlhOTZLT3luc080NzhjVnhAcmlwcGVyPg==>
2021-12-08 6:56 ` Guo Zhengkui [this message]
2021-12-08 16:29 ` Bjorn Andersson
2021-12-09 3:21 ` [PATCH] phy: qcom: use struct_size instead of sizeof Guo Zhengkui
2021-12-09 4:50 ` Bjorn Andersson
2021-12-09 11:55 ` Vinod Koul
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