linux-kernel - Re: [RFC][PATCH 4/4] RTC: SMBus support for the M41T80, etc. driver

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] [day] [month] [year] [list]

Date:	Fri, 9 May 2008 01:17:21 +0100 (BST)
From:	"Maciej W. Rozycki" <macro@...ux-mips.org>
To:	Atsushi Nemoto <anemo@....ocn.ne.jp>
cc:	a.zummo@...ertech.it, khali@...ux-fr.org, ralf@...ux-mips.org,
	tglx@...utronix.de, akpm@...ux-foundation.org,
	rtc-linux@...glegroups.com, i2c@...sensors.org,
	linux-mips@...ux-mips.org, linux-kernel@...r.kernel.org,
	ab@...able.de, mgreer@...sta.com
Subject: Re: [RFC][PATCH 4/4] RTC: SMBus support for the M41T80, etc. driver

On Thu, 8 May 2008, Atsushi Nemoto wrote:

> For write transfer, you must use only one i2c_msg.  If two i2c_msg
> were used, the slave address is inserted between register number and
> first data.  This chip cannot accept such sequence.

 Correct, thank you for pointing it out -- verified with the datasheet.  I 
will send an updated patch separately taking other suggestions into 
account as well.

> On success, m41t80_i2c_transfer() returns positive value, but
> m41t80_transfer() should return 0.

 I think the check should be for values below zero as originally instead.  
Thanks for the point again.

  Maciej
--
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/