linux-kernel - Re: V4L2 drivers: potentially dangerous and inefficient msecs_to

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:	Tue, 15 Sep 2009 21:14:19 +0200
From:	Marcin Slusarz <marcin.slusarz@...il.com>
To:	Andreas Mohr <andi@...as.de>
CC:	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	Luca Risolia <luca.risolia@...dio.unibo.it>,
	linux-media@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	jirislaby@...il.com
Subject: Re: V4L2 drivers: potentially dangerous and inefficient msecs_to_jiffies()
 calculation

Andreas Mohr pisze:
> Hi all,
> 
> ./drivers/media/video/sn9c102/sn9c102_core.c
> ,
> ./drivers/media/video/et61x251/et61x251_core.c
> and
> ./drivers/media/video/zc0301/zc0301_core.c
> do
>                             cam->module_param.frame_timeout *
>                             1000 * msecs_to_jiffies(1) );
> multiple times each.
> What they should do instead is
> frame_timeout * msecs_to_jiffies(1000), I'd think.

Or better: frame_timeout * HZ

Marcin
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/