linux-kernel - Re: [PATCH] spi: atmel-qspi: Memory barriers after memory-mapped I/O

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Message-ID: <b1661e3f-cc62-489b-a4f8-9964ccf65fae@sirena.org.uk>
Date: Wed, 18 Dec 2024 17:01:06 +0000
From: Mark Brown <broonie@...nel.org>
To: Bence Csókás <csokas.bence@...lan.hu>
Cc: Piotr Bugalski <bugalski.piotr@...il.com>, linux-spi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Hari.PrasathGE@...rochip.com, Mahesh.Abotula@...rochip.com,
	Marco.Cardellini@...rochip.com, stable@...r.kernel.org,
	Nicolas Ferre <nicolas.ferre@...rochip.com>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Claudiu Beznea <claudiu.beznea@...on.dev>
Subject: Re: [PATCH] spi: atmel-qspi: Memory barriers after memory-mapped I/O

On Wed, Dec 18, 2024 at 05:58:49PM +0100, Bence Csókás wrote:

> However, the current documentation makes no mention to
> synchronization requirements in the other direction, i.e.
> after the last data written via AHB, and before the first
> register access on APB.
> 
> ---
> 
> Fixes: d5433def3153 ("mtd: spi-nor: atmel-quadspi: Add spi-mem support to atmel-quadspi")
> Cc: Hari.PrasathGE@...rochip.com
> Cc: Mahesh.Abotula@...rochip.com
> Cc: Marco.Cardellini@...rochip.com
> Cc: <stable@...r.kernel.org> # c0a0203cf579: ("spi: atmel-quadspi: Create `atmel_qspi_ops`"...)
> Cc: <stable@...r.kernel.org> # 6.x.y
> Signed-off-by: Bence Csókás <csokas.bence@...lan.hu>
> ---

Your signoffs and whatnot need to go before the --- so they don't get
cut off by tools, any any ancilliary stuff should go after.

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