[PATCH] Fix of broken state in CFI driver caused by FL_SHUTDOWN

[Joakim Tjernlund]

> -----Original Message-----
> From: linux-mtd-bounces at lists.infradead.org [mailto:linux-mtd-bounces at lists.infradead.org] On Behalf
> Of Alexey Korolev
> Sent: den 4 april 2008 14:22
> To: Jörn Engel
> Cc: nico at cam.org; haokexin at gmail.com; dwmw2 at infradead.org; akpm at linux-foundation.org; linux-
> mtd at lists.infradead.org
> Subject: Re: [PATCH] Fix of broken state in CFI driver caused by FL_SHUTDOWN
> 
> Hi
> 
> 
>  CFI driver in 2.6.24 kernel is broken. Not so intensive read/write operations cause incomplete writes
> which lead to kernel panics in JFFS2.
>  We investigated the issue - it is caused by bug in FL_SHUTDOWN parsing code. Sometimes chip returns -
> EIO as if it is in FL_SHUTDOWN state when it should wait in FL_PONT (error in order of conditions).
> 
> The following patch fixes the bug in state parsing code of CFI.
> Also I've added comments to notify developers if they want to add new case in future.
> Please include it.
> 
> Signed-off-by: Alexey Korolev <akorolev at infradead.org>
> Reviewed-By: Joern Engel <joern at logfs.org>

Acked-By: Joakim Tjernlund <Joakim.Tjenrlund at transmode.se>

Guys, I think you should sent this directly to Linus as David seems
unavailable ATM. It should really go into 2.6.25

 Jocke