linux-kernel - Re: [PATCH v2] isdn: hfc_{pci,sx}: Avoid empty body if statements

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Date:   Thu, 18 Oct 2018 17:23:10 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     natechancellor@...il.com
Cc:     isdn@...ux-pingi.de, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, yamada.masahiro@...ionext.com
Subject: Re: [PATCH v2] isdn: hfc_{pci,sx}: Avoid empty body if statements

From: Nathan Chancellor <natechancellor@...il.com>
Date: Thu, 18 Oct 2018 17:21:17 -0700

> Thanks for the review, I went ahead and compiled with the following diff
> on top of v2 and got no warnings from Clang, GCC, or sparse, does this
> seem satisfactory for v3?

Well, one thing I notice.

> @@ -86,7 +86,7 @@ release_io_hfcpci(struct IsdnCardState *cs)
>         pci_free_consistent(cs->hw.hfcpci.dev, 0x8000,
>                             cs->hw.hfcpci.fifos, cs->hw.hfcpci.dma);
>         cs->hw.hfcpci.fifos = NULL;
> -       iounmap((void *)cs->hw.hfcpci.pci_io);
> +       iounmap(cs->hw.hfcpci.pci_io);
>  }

Driver uses iounmap().

> @@ -1692,7 +1692,7 @@ setup_hfcpci(struct IsdnCard *card)
>                 printk(KERN_WARNING "HFC-PCI: No IRQ for PCI card found\n");
>                 return (0);
>         }
> -       cs->hw.hfcpci.pci_io = (char *)(unsigned long)dev_hfcpci->resource[1].start;
> +       cs->hw.hfcpci.pci_io = (void __iomem *)(unsigned long)dev_hfcpci->resource[1].start;
>         printk(KERN_INFO "HiSax: HFC-PCI card manufacturer: %s card name: %s\n", id_list[i].vendor_name, id_list[i].card_name);

But does not use iomap().  You won't need any cast here if it did use
iomap() properly.

Thanks.