linux-kernel - Re: [PATCH v2 1/2] PCI: hv: Remove unnecessary type casting from kzalloc

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Message-ID: <20200224120456.GC11120@e121166-lin.cambridge.arm.com>
Date:   Mon, 24 Feb 2020 12:04:56 +0000
From:   Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:     Dexuan Cui <decui@...rosoft.com>
Cc:     kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
        bhelgaas@...gle.com, linux-hyperv@...r.kernel.org,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        mikelley@...rosoft.com
Subject: Re: [PATCH v2 1/2] PCI: hv: Remove unnecessary type casting from
 kzalloc

On Fri, Feb 21, 2020 at 09:59:56PM -0800, Dexuan Cui wrote:
> In C, there is no need to cast a void * to any other pointer type.
> 
> Fixes: 877b911a5ba0 ("PCI: hv: Avoid a kmemleak false positive caused by the hbus buffer")

This patch fixes nothing, anyway, that's a leftover that I removed.

Applied the series to pci/hv for v5.7.

Thanks,
Lorenzo

> Signed-off-by: Dexuan Cui <decui@...rosoft.com>
> Reviewed-by: Michael Kelley <mikelley@...rosoft.com>
> ---
> 
> Change in v2: this was part of v1.
> 
>  drivers/pci/controller/pci-hyperv.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/pci-hyperv.c b/drivers/pci/controller/pci-hyperv.c
> index 9977abff92fc..0fe0283368d2 100644
> --- a/drivers/pci/controller/pci-hyperv.c
> +++ b/drivers/pci/controller/pci-hyperv.c
> @@ -2922,7 +2922,7 @@ static int hv_pci_probe(struct hv_device *hdev,
>  	 * positive by using kmemleak_alloc() and kmemleak_free() to ask
>  	 * kmemleak to track and scan the hbus buffer.
>  	 */
> -	hbus = (struct hv_pcibus_device *)kzalloc(HV_HYP_PAGE_SIZE, GFP_KERNEL);
> +	hbus = kzalloc(HV_HYP_PAGE_SIZE, GFP_KERNEL);
>  	if (!hbus)
>  		return -ENOMEM;
>  	hbus->state = hv_pcibus_init;
> -- 
> 2.19.1
>