linux-kernel - Re: [PATCH] add hardware I2C support for ARM IMX23

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]

Message-ID: <20121130173224.10203ha9fee3y36g@62.129.139.42>
Date:	Fri, 30 Nov 2012 17:32:24 +0100
From:	"sander van ginkel" <sander@...-ginkel.eu>
To:	"Wolfram Sang" <w.sang@...gutronix.de>
Cc:	linux-kernel@...r.kernel.org, kernel@...gutronix.de,
	shawn.guo@...aro.org, linux-arm-kernel@...ts.infradead.org,
	linux-i2c@...r.kernel.org
Subject: Re: [PATCH] add hardware I2C support for ARM IMX23

> You might want to try my for-next branch or wait for 3.8-rc1, maybe
the
> DMA termination patch helps? Also enabling I2C debug messages is
> probably worth it.
>
> Regards,
>
>    Wolfram
>
> --
> Pengutronix e.K.                           | Wolfram Sang
      |
> Industrial Linux Solutions                 |
http://www.pengutronix.de/  |
>

I've tested your git tree, with the same config as I used for the  
3.7.0-rc6 release (IMX i2c build in)
It's not a 100% fix

If I do "i2cdetect -y -r 0" with 3.7.0-rc6, i2cdetect gets confused  
and the kernel keeps dumping "mxs-i2c 80058000.i2c: Failed to get PIO  
reg. write descriptor."
If I do the same with your git release I get the same result, but only  
when i2cdetect is running. When it's finished or I terminate, the  
kprint will also disappear.
So there is some improvement but not 100% yet.


--
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/