From: Heiner Kallweit <hkallweit1@gmail.com>
To: Mark Brown <broonie@kernel.org>
Cc: Brian Norris <computersforpeace@gmail.com>,
linux-mtd@lists.infradead.org,
"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
Michal Suchanek <hramrach@gmail.com>,
martin@sperl.org
Subject: Re: RfC: Handle SPI controller limitations like maximum message length
Date: Fri, 20 Nov 2015 20:37:23 +0100 [thread overview]
Message-ID: <564F7673.40205@gmail.com> (raw)
In-Reply-To: <20151120191842.GE1929@sirena.org.uk>
Am 20.11.2015 um 20:18 schrieb Mark Brown:
> On Fri, Nov 20, 2015 at 07:59:37PM +0100, Heiner Kallweit wrote:
>
>> OK, I interpret this as:
>> Controller drivers shall return 0 only if the complete message was
>> transferred successfully.
>
> Yes.
>
>> If a controller driver returns an error it has the option to set
>> actual_length to what was transferred successfully.
>
> It should always do this.
>
>> This means we can't use patch 4 from Michal because it bails out as soon
>> as the underlying SPI transfer returns an error.
>
> I haven't seen that patch.
>
Sorry, this was addressed to Brian. It's about a mtd spi-nor patch.
http://lists.infradead.org/pipermail/linux-mtd/2015-August/061062.html
Most likely neither you nor linux-spi was on cc.
(Oh, it was patch 7 of the series, not 4.)
next prev parent reply other threads:[~2015-11-20 19:38 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-18 21:19 RfC: Handle SPI controller limitations like maximum message length Heiner Kallweit
2015-11-18 21:57 ` Mark Brown
2015-11-18 22:50 ` Heiner Kallweit
2015-11-19 11:40 ` Mark Brown
2015-11-19 15:00 ` Martin Sperl
2015-11-19 17:15 ` Mark Brown
2015-11-20 0:07 ` Brian Norris
2015-11-20 11:06 ` Mark Brown
2015-11-20 11:16 ` Martin Sperl
2015-11-20 10:18 ` Martin Sperl
2015-11-20 12:05 ` Mark Brown
2015-11-20 12:56 ` Martin Sperl
2015-11-21 13:49 ` Mark Brown
2015-11-21 14:10 ` Heiner Kallweit
2015-11-21 15:57 ` Michal Suchanek
2015-11-21 22:59 ` [PATCH 0/3] spi: mtd: Handle HW message length restrictions Heiner Kallweit
2015-11-21 23:01 ` [PATCH 1/3] spi: core: add max_msg_size to spi_master Heiner Kallweit
2015-11-22 13:16 ` Mark Brown
2015-11-22 16:15 ` Heiner Kallweit
2015-11-23 11:38 ` Mark Brown
2015-11-27 19:26 ` Heiner Kallweit
2015-11-30 16:42 ` Mark Brown
2015-11-30 20:15 ` Heiner Kallweit
2015-11-21 23:08 ` [PATCH 2/3] mtd: m25p80: handle HW message size restrictions Heiner Kallweit
2015-11-22 12:51 ` Michal Suchanek
2015-11-21 23:11 ` [PATCH 3/3] spi: fsl-espi: make use of max_msg_size in spi_master to handle HW restrictions Heiner Kallweit
2015-11-30 20:24 ` [PATCH v2 1/2] spi: core: add max_msg_size to spi_master Heiner Kallweit
2015-11-30 20:25 ` [PATCH resubmit 2/2] spi: fsl-espi: make use of max_msg_size in spi_master to handle HW restrictions Heiner Kallweit
2015-12-01 14:19 ` Mark Brown
2015-12-01 18:53 ` Heiner Kallweit
2015-11-22 13:19 ` RfC: Handle SPI controller limitations like maximum message length Mark Brown
2015-11-20 0:02 ` Brian Norris
2015-11-20 6:59 ` Heiner Kallweit
2015-11-20 10:06 ` Heiner Kallweit
2015-11-20 12:35 ` Mark Brown
2015-11-20 18:59 ` Heiner Kallweit
2015-11-20 19:05 ` Michal Suchanek
2015-11-20 19:21 ` Mark Brown
2015-11-20 19:44 ` Michal Suchanek
2015-11-20 23:22 ` Brian Norris
2015-11-21 22:53 ` Heiner Kallweit
2015-11-20 19:18 ` Mark Brown
2015-11-20 19:37 ` Heiner Kallweit [this message]
2015-11-20 12:31 ` Mark Brown
2015-11-20 12:56 ` Michal Suchanek
2015-11-20 23:07 ` Brian Norris
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