lkml.org 
[lkml]   [2006]   [Nov]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 5/5] [RFC] Add MMC Password Protection (lock/unlock) support V7: mmc_omap_dma.diff
Anderson Briglia wrote:
> OMAP platform specific patch.
> - Adjust the frame size for DMA transfers.
>
> Signed-off-by: Anderson Briglia <anderson.briglia <at> indt.org.br>
> Signed-off-by: Carlos Eduardo Aguiar <carlos.aguiar <at> indt.org.br>
>

This looks like a generic patch for OMAP and shouldn't be in this set.

> Index: linux-omap-2.6.git/drivers/mmc/omap.c
> ===================================================================
> --- linux-omap-2.6.git.orig/drivers/mmc/omap.c 2006-11-22
> 09:07:25.000000000 -0400
> +++ linux-omap-2.6.git/drivers/mmc/omap.c 2006-11-22
> 09:19:03.000000000 -0400
> @@ -629,6 +629,14 @@ mmc_omap_prepare_dma(struct mmc_omap_hos
>
> data_addr = host->phys_base + OMAP_MMC_REG_DATA;
> frame = data->blksz;
> +
> +#ifdef CONFIG_MMC_PASSWORDS
> + /* MMC LOCK/UNLOCK: Do frame size multiple of two. This is
> + * needed for DMA transfers to work properly, once
> + * the block size depends on MMC password length.
> + */
> + frame += frame&0x1;
> +#endif
> count = sg_dma_len(sg);
>
> if ((data->blocks == 1) && (count > (data->blksz)))
>

Now this you're going to have to explain to me. Especially the part
where why this is specific to the lock commands.

--
-- Pierre Ossman

Linux kernel, MMC maintainer http://www.kernel.org
PulseAudio, core developer http://pulseaudio.org
rdesktop, core developer http://www.rdesktop.org

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-11-25 10:01    [W:0.061 / U:0.460 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site