lkml.org 
[lkml]   [2009]   [Mar]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: MMC layer regression with single-block controllers
On Mon, 23 Mar 2009 10:28:02 +0100
Manuel Lauss <mano@roarinelk.homelinux.net> wrote:

> Hello Pierre,
>
> Since about 2.6.28-rc1, I hit the following BUG_ON() in mmc/core.c
> (line 155):
>
> if (mrq->data) {
> BUG_ON(mrq->data->blksz > host->max_blk_size);
> >>>>>>>>> BUG_ON(mrq->data->blocks > host->max_blk_count); <<<<<<
> BUG_ON(mrq->data->blocks * mrq->data->blksz >
> host->max_req_size);
>
> It's easy to reproduce; just set your favorite host controllers'
> mmc->max_blk_cnt to 1 (or anything smaller than 4). As far as I can
> tell it was introduced with some block layer changes before 2.6.28-rc1
> was released.
>

Ouch. Have you determined that it is the block layer that isn't
respecting its settings? If so, the we probably need to notify Jens
Axboe.

Rgds
--
-- Pierre Ossman

WARNING: This correspondence is being monitored by the
Swedish government. Make sure your server uses encryption
for SMTP traffic and consider using PGP for end-to-end
encryption.
[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2009-03-24 21:05    [W:0.073 / U:1.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site