From: Mike Frysinger <vapier.adi-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Ernst Schwab <eschwab-BGeptl67XyCzQB+pC5nmwQ@public.gmane.org>
Cc: David Brownell
<dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>,
spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
yi.li-OyLXuOCK7orQT0dZR+AlfA@public.gmane.org
Subject: Re: [PATCH 1/5] spi: spi_lock_bus and spi_unlock_bus
Date: Tue, 16 Feb 2010 19:40:20 -0500 [thread overview]
Message-ID: <8bd0f97a1002161640u58a6dc70s8cfb63bb4e729f83@mail.gmail.com> (raw)
In-Reply-To: <C97ECEF9A58744F8A9140FAC483AC090@pces>
On Tue, Feb 16, 2010 at 19:21, Ernst Schwab wrote:
> Mike Frysinger wrote:
>> this is what i proposed last time, but we havent gotten around to
>> implementing it:
>>
>> - add a new spi_master flag to spi.h like SPI_MASTER_HALF_DUPLEX --
>> SPI_MASTER_LOCK_BUS
>> - have the mmc_spi code check that bit in the master before falling
>> back to its hack
>
> This would limit the bus locking capability of the _API_ to a single
> driver (the mmc_spi), or did I miss something?
the mmc_spi code checks for exclusiveness at load time ... it needs to
have the lock/unlock steps pushed down to where it actually needs it
-mike
------------------------------------------------------------------------------
SOLARIS 10 is the OS for Data Centers - provides features such as DTrace,
Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW
http://p.sf.net/sfu/solaris-dev2dev
_______________________________________________
spi-devel-general mailing list
spi-devel-general@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/spi-devel-general
next prev parent reply other threads:[~2010-02-17 0:40 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-16 19:44 [PATCH 0/5] spi/mmc_spi: SPI bus locking to use mmc_spi together with other SPI devices Ernst Schwab
[not found] ` <20100216204450.e043eed8.eschwab-BGeptl67XyCzQB+pC5nmwQ@public.gmane.org>
2010-02-16 19:57 ` [PATCH 1/5] spi: spi_lock_bus and spi_unlock_bus Ernst Schwab
[not found] ` <20100216205720.ebe949a1.eschwab-BGeptl67XyCzQB+pC5nmwQ@public.gmane.org>
2010-02-16 20:43 ` Grant Likely
[not found] ` <fa686aa41002161243y6e24e439yff54a28cbe295de3-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-02-16 21:16 ` Ned Forrester
[not found] ` <4B7B0B1C.8050407-/d+BM93fTQY@public.gmane.org>
2010-02-16 23:23 ` Grant Likely
2010-02-17 0:07 ` Mike Frysinger
2010-02-17 0:21 ` Ernst Schwab
2010-02-17 0:40 ` Mike Frysinger [this message]
[not found] ` <8bd0f97a1002161607m3c748ccegaffb83c42667287a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-02-17 3:48 ` Grant Likely
[not found] ` <fa686aa41002161948o31a48fc9kac263b0ac34f1a8d-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-02-17 4:34 ` Mike Frysinger
[not found] ` <8bd0f97a1002162034r2d3e397eq12ae0f0df1ae2adb-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-02-17 4:47 ` Grant Likely
[not found] ` <fa686aa41002162047h4b4c9cdam2133baf3b7d0e27c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-02-17 5:04 ` Mike Frysinger
[not found] ` <8bd0f97a1002162104u5291da69gbff20837f78c9cdf-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-02-17 5:08 ` Grant Likely
2010-02-17 4:37 ` Grant Likely
2010-02-17 0:16 ` Ernst Schwab
2010-02-17 4:32 ` Grant Likely
2010-02-17 7:35 ` Ernst Schwab
2010-02-17 13:30 ` Grant Likely
[not found] ` <fa686aa41002170530i2ae007c2ia4f2ad185dfd2713-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-02-17 14:12 ` Grant Likely
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=8bd0f97a1002161640u58a6dc70s8cfb63bb4e729f83@mail.gmail.com \
--to=vapier.adi-re5jqeeqqe8avxtiumwx3w@public.gmane.org \
--cc=dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org \
--cc=eschwab-BGeptl67XyCzQB+pC5nmwQ@public.gmane.org \
--cc=spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org \
--cc=yi.li-OyLXuOCK7orQT0dZR+AlfA@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).