From: "Philip, Avinash" <avinashphilip-l0cyMroinI0@public.gmane.org>
To: "Datta, Shubhrajyoti" <shubhrajyoti-l0cyMroinI0@public.gmane.org>,
"spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org"
<spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Cc: "linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: RE: [PATCH] spi: omap2-mcspi: In case of dma errors fall back to pio
Date: Wed, 8 Aug 2012 14:39:11 +0000 [thread overview]
Message-ID: <518397C60809E147AF5323E0420B992E3E987576@DBDE01.ent.ti.com> (raw)
In-Reply-To: <1343197229-15188-1-git-send-email-shubhrajyoti-l0cyMroinI0@public.gmane.org>
On Wed, Jul 25, 2012 at 11:50:29, Datta, Shubhrajyoti wrote:
> In case there are dma errors currently the driver exits.
> Make the spi driver fall back to pio mode in case of dma errors.
>
> If the DMA engine is not selected the driver
> exits.This patch makes the spi fall back to pio in that case.
>
> Also adds a field dma_unusable to struct omap2_mcspi.
>
> Signed-off-by: Shubhrajyoti D <shubhrajyoti-l0cyMroinI0@public.gmane.org>
I have tested this patch for SPI PIO mode on AM335x EVM.
Acked-by: Philip, Avinash <avinashphilip-l0cyMroinI0@public.gmane.org>
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prev parent reply other threads:[~2012-08-08 14:39 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-25 6:20 [PATCH] spi: omap2-mcspi: In case of dma errors fall back to pio Shubhrajyoti D
2012-08-07 7:47 ` Tony Lindgren
2012-08-07 11:21 ` Shubhrajyoti
2012-08-07 12:02 ` Tony Lindgren
2012-08-07 12:21 ` Felipe Balbi
[not found] ` <1343197229-15188-1-git-send-email-shubhrajyoti-l0cyMroinI0@public.gmane.org>
2012-08-08 14:39 ` Philip, Avinash [this message]
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