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 >>
WARNING: multiple messages have this Message-ID (diff)
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 >> -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy
next prev parent reply other threads:[~2021-12-08 6:56 UTC|newest] Thread overview: 14+ 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 13:16 ` Guo Zhengkui 2021-12-07 15:13 ` Bjorn Andersson 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 6:56 ` Guo Zhengkui 2021-12-08 16:29 ` Bjorn Andersson 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 3:21 ` Guo Zhengkui 2021-12-09 4:50 ` Bjorn Andersson 2021-12-09 4:50 ` Bjorn Andersson 2021-12-09 11:55 ` Vinod Koul 2021-12-09 11:55 ` Vinod Koul
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