linux-kernel - Re: [PATCH] scsi: mptfusion: Remove unnecessarily casts

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Date:   Thu, 20 Aug 2020 11:53:58 -0700
From:   Joe Perches <joe@...ches.com>
To:     Alex Dewar <alex.dewar90@...il.com>,
        Sathya Prakash <sathya.prakash@...adcom.com>,
        Sreekanth Reddy <sreekanth.reddy@...adcom.com>,
        Suganath Prabu Subramani 
        <suganath-prabu.subramani@...adcom.com>,
        MPT-FusionLinux.pdl@...adcom.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: mptfusion: Remove unnecessarily casts

On Thu, 2020-08-20 at 19:05 +0100, Alex Dewar wrote:
> In a number of places, the value returned from pci_alloc_consistent() is
> unnecessarily cast from void*. Remove these casts.
[]
> diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
[]
> @@ -4975,7 +4975,7 @@ GetLanConfigPages(MPT_ADAPTER *ioc)
>  
>  	if (hdr.PageLength > 0) {
>  		data_sz = hdr.PageLength * 4;
> -		ppage0_alloc = (LANPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
> +		ppage0_alloc = pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
>  		rc = -ENOMEM;
>  		if (ppage0_alloc) {
>  			memset((u8 *)ppage0_alloc, 0, data_sz);

If you are removing unnecessary casts, it'd be better to remove
all of them in the same file or subsystem at once.

Also this memset and cast isn't actually necessary any more
as pci_alloc_consistent already zeros memory.

etc...