Re: [PATCH v3 0/3] spi: Helper for deriving timeout values

From: "Jernej Škrabec" <jernej.skrabec@gmail.com>
To: Mark Brown <broonie@kernel.org>,
	linux-spi@vger.kernel.org,
	Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Tudor Ambarus <tudor.ambarus@linaro.org>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	Claudiu Beznea <claudiu.beznea@microchip.com>,
	Chen-Yu Tsai <wens@csie.org>,
	Samuel Holland <samuel@sholland.org>,
	linux-arm-kernel@lists.infradead.org,
	Miquel Raynal <miquel.raynal@bootlin.com>
Subject: Re: [PATCH v3 0/3] spi: Helper for deriving timeout values
Date: Thu, 22 Jun 2023 18:46:27 +0200	[thread overview]
Message-ID: <2686152.mvXUDI8C0e@jernej-laptop> (raw)
In-Reply-To: <20230622090634.3411468-1-miquel.raynal@bootlin.com>

Dne četrtek, 22. junij 2023 ob 11:06:31 CEST je Miquel Raynal napisal(a):
> Hello,
> 
> I recently came across an issue with the Atmel spi controller driver
> which would stop my transfers after a too small timeout when performing
> big transfers (reading a 4MiB flash in one transfer). My initial idea
> was to derive a the maximum amount of time a transfer would take
> depending on its size and use that as value to avoid erroring-out when
> not relevant. Mark wanted to go further by creating a core helper doing
> that, based on the heuristics from the sun6i driver.
> 
> Here is a small series of 3 patches doing exactly that.
> 
> Cheers,
> Miquèl
> 
> Changes in v3:
> * Collected a tag.

Did you? I don't see my a-b at patch 3.

Best regards,
Jernej

> * As my platform runs on 6.1 currently, I cherry-picked a mainline patch
>   changing s/master/host/ in the atmel controller driver and modified the
>   series to fit the new naming. I then cherry-picked my three patches and
>   verified it compiled correctly against a v6.4-rc1.
> 
> Miquel Raynal (3):
>   spi: Create a helper to derive adaptive timeouts
>   spi: atmel: Prevent false timeouts on long transfers
>   spi: sun6i: Use the new helper to derive the xfer timeout value
> 
>  drivers/spi/spi-atmel.c | 18 +++++++++++-------
>  drivers/spi/spi-sun6i.c |  2 +-
>  include/linux/spi/spi.h | 17 +++++++++++++++++
>  3 files changed, 29 insertions(+), 8 deletions(-)
> 
> 