linux-kernel - Re: [PATCH] mwifiex: Use put_unaligned

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:   Thu, 05 Oct 2017 10:23:37 +0300
From:   Kalle Valo <kvalo@...eaurora.org>
To:     Himanshu Jha <himanshujha199640@...il.com>
Cc:     amitkarwar@...il.com, nishants@...vell.com, gbhat@...vell.com,
        huxm@...vell.com, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mwifiex: Use put_unaligned_le32

Himanshu Jha <himanshujha199640@...il.com> writes:

> Use put_unaligned_le32 rather than using byte ordering function and
> memcpy which makes code clear.
> Also, add the header file where it is declared.
>
> Done using Coccinelle and semantic patch used is :
>
> @ rule1 @
> identifier tmp; expression ptr,x; type T;
> @@
>
> - tmp = cpu_to_le32(x);
>
>   <+... when != tmp
> - memcpy(ptr, (T)&tmp, ...);
> + put_unaligned_le32(x,ptr);
>   ...+>
>
> @ depends on rule1 @
> type j; identifier tmp;
> @@
>
> - j tmp;
>   ...when != tmp
>
> Signed-off-by: Himanshu Jha <himanshujha199640@...il.com>
> ---
>  drivers/net/wireless/marvell/mwifiex/cmdevt.c | 10 ++++------
>  1 file changed, 4 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/net/wireless/marvell/mwifiex/cmdevt.c b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> index 0edc5d6..e28e119 100644
> --- a/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> +++ b/drivers/net/wireless/marvell/mwifiex/cmdevt.c
> @@ -17,6 +17,7 @@
>   * this warranty disclaimer.
>   */
>  
> +#include <linux/unaligned/access_ok.h>

I don't think this is correct. Should it be asm/unaligned.h?

-- 
Kalle Valo