linux-kernel - Re: [BUG] Rockchip SPI: Runtime PM usage count underflow!

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Message-ID: <CAAMcf8CFED71FKUBpRy+FZNf8XKim1fuxW1C+ErZQqLsaWm1yQ@mail.gmail.com>
Date: Sun, 18 Aug 2024 20:55:08 +0200
From: Vicente Bergas <vicencb@...il.com>
To: Dragan Simic <dsimic@...jaro.org>
Cc: "open list:ARM/Rockchip SoC..." <linux-rockchip@...ts.infradead.org>, linux-spi@...r.kernel.org, 
	Mark Brown <broonie@...nel.org>, Heiko Stuebner <heiko@...ech.de>, 
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, 
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [BUG] Rockchip SPI: Runtime PM usage count underflow!

On Sun, Aug 18, 2024 at 8:26 PM Dragan Simic <dsimic@...jaro.org> wrote:
>
> Hello Vincente,
>
> On 2024-08-18 20:13, Vicente Bergas wrote:
> > i am a user of the CONFIG_SPI_SPIDEV device.
> > It stopped working between 6.8 and 6.10.5.
> > The SPI bus itself reports no errors to userspace, but no devices
> > appear connected to the bus.
> > The platform used is RK3328.
> > The only spi-related message in dmesg is:
> > rockchip-spi ff190000.spi: Runtime PM usage count underflow!
>
> I'm working on a related patch.  Could you, please, describe your
> use case for the spidev driver, i.e. what board are you using it on,
> and for what purpose?

The board is ROCK64 and the purpose is to update all the software that
board runs, which is stored on the SPI NOR flash onboard.

I have not tested this kernel version on RK3399, but it may also
affect that other use case:
https://gitlab.com/vicencb/kevinboot

N.B.: My name is Vicente.