linux-kernel - Re: [PATCH] power: bq20z75: fix issues with present and suspend

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:	Wed, 16 Mar 2011 16:48:02 +0300
From:	Anton Vorontsov <cbouatmailru@...il.com>
To:	rklein@...dia.com
Cc:	olof@...om.net, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] power: bq20z75: fix issues with present and suspend

On Wed, Mar 09, 2011 at 04:18:02PM -0800, rklein@...dia.com wrote:
> From: Rhyland Klein <rklein@...dia.com>
> 
> There are a few issues found around the battery not being present. If the
> battery isn't present, then a few undesirable things happen. The first was
> excessive reporting of failed properties. This was fixed by instead returning
> ENODATA for all properties other than PRESENT if the battery isn't present.
> That way the callers can identify the difference between a failure and the
> battery not being there.
> 
> The next issue was in the suspend logic. It was found that if the battery wasn't
> present, then it would return a failure, preventing the system from going into
> suspend. If there is no battery present, the io is expected to fail, so in that
> case, we shouldn't return the failure and just acknowledge that it was expected.
> 
> I also found that when a gpio was used, i didn't maintain the internal
> is_present state properly. I added a set of that to fix that.
> 
> Lastly, the code to see io's fail and figure out that the battery isn't present
> when not using a gpio had a problem. In that code, it looked for the read to
> fail and if it did, then handled it. The problem is that in function to get the
> property, it first writes a value and that write can fail, causing the code
> to never reach the logic after the read. Fix is to move the logic till after
> the write.
> 
> Change-Id: I09c9a9f0c1f0bcbad2308b6ffc65f6823d6a7ad0
> Signed-off-by: Rhyland Klein <rklein@...dia.com>
> ---

Applied, thank you!

-- 
Anton Vorontsov
Email: cbouatmailru@...il.com
--
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/