From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Ray Jui <rjui-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Cc: Grant Likely
<grant.likely-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
linux-spi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
JD Zheng <jdzheng-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>,
Scott Branden <sbranden-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH] spi: pl022: Fix broken spidev when DMA is enabled
Date: Wed, 8 Oct 2014 19:21:23 +0100 [thread overview]
Message-ID: <20141008182123.GH4609@sirena.org.uk> (raw)
In-Reply-To: <543562EB.8060300-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 481 bytes --]
On Wed, Oct 08, 2014 at 09:14:35AM -0700, Ray Jui wrote:
> Thanks for the reply. It looks like you are also the maintainer of spidev.
> In this case, could you please help to confirm that you expect spidev to use
> separate buffers for TX and RX? If so, I can go ahead and make the change in
> spidev.
Yes, that would be my expectation for maximum robustness (or if it is
going to use one buffer it explicitly maps it for mixed use but I'd
expect that to be asking for trouble).
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next prev parent reply other threads:[~2014-10-08 18:21 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Ray Jui <rjui@broadcom.com>
2014-10-09 18:19 ` [PATCH] spi: spidev: Use separate TX and RX bounce buffers Ray Jui
[not found] ` <1412878765-29088-1-git-send-email-rjui-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2014-10-13 11:07 ` Mark Brown
[not found] ` <20141013110726.GT27755-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2014-10-14 3:05 ` Ray Jui
[not found] ` <Ray Jui <rjui-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2014-10-08 4:38 ` [PATCH] spi: pl022: Fix broken spidev when DMA is enabled Ray Jui
[not found] ` <1412743127-4523-1-git-send-email-rjui-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2014-10-08 11:21 ` Mark Brown
2014-10-08 16:14 ` Ray Jui
[not found] ` <543562EB.8060300-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2014-10-08 18:21 ` Mark Brown [this message]
[not found] ` <20141008182123.GH4609-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2014-10-08 18:31 ` Ray Jui
2014-10-09 13:59 ` Geert Uytterhoeven
2014-10-09 18:44 ` [PATCH] spi: pl022: Fix incorrect dma_unmap_sg Ray Jui
[not found] ` <1412880294-9860-1-git-send-email-rjui-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
2014-10-13 11:08 ` Mark Brown
[not found] ` <20141013110851.GU27755-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2014-10-14 3:05 ` Ray Jui
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