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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20181018.154219.1246620018001438422.davem@davemloft.net>
Date:   Thu, 18 Oct 2018 15:42:19 -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: Wed, 17 Oct 2018 20:49:36 -0700

> @@ -228,8 +228,8 @@ typedef union {
>  } fifo_area;
>  
>  
> -#define Write_hfc(a, b, c) (*(((u_char *)a->hw.hfcpci.pci_io) + b) = c)
> -#define Read_hfc(a, b) (*(((u_char *)a->hw.hfcpci.pci_io) + b))
> +#define Write_hfc(a, b, c) (writeb(c, (a->hw.hfcpci.pci_io) + b))
> +#define Read_hfc(a, b) (readb((a->hw.hfcpci.pci_io) + b))

This will add new kinds of warnings.

The problem is that readb/writeb/etc. take an __iomem pointer, but pci_io
is declared as plain "unsigned char *".  It should be something like
"void * __iomem" of similar.