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From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Lee Jones <lee.jones@linaro.org>
Cc: broonie@kernel.org, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org,
	Radu Pirea <radu_nicolae.pirea@upb.ro>,
	Nicolas Ferre <nicolas.ferre@microchip.com>,
	Ludovic Desroches <ludovic.desroches@microchip.com>
Subject: Re: [PATCH 12/14] spi: spi-at91-usart: Make use of the defined 'struct of_device_id'
Date: Thu, 16 Jul 2020 10:50:23 +0200	[thread overview]
Message-ID: <20200716085023.GA3428@piout.net> (raw)
In-Reply-To: <20200716075606.GM3165313@dell>

On 16/07/2020 08:56:06+0100, Lee Jones wrote:
> On Wed, 15 Jul 2020, Alexandre Belloni wrote:
> 
> > Hi Lee,
> > 
> > On 15/07/2020 16:06:30+0100, Lee Jones wrote:
> > > It's there so why not use it.
> > > 
> > 
> > Is that the correct resolution? Isn't the proper thing to do simply
> > removing at91_usart_spi_dt_ids as the only way it will ever be probed is
> > through drivers/mfd/at91-usart.c and I would think matching the driver
> > name is enough.
> 
> I'm 50/50 on this.
> 
> Happy with whatever the authors/maintainers decide most appropriate.
> 

Seeing that the compatible string is not documented or used by any dts,
I would go for the removal.

> > > Fixes the following W=1 kernel build warning(s):
> > > 
> > >  drivers/spi/spi-at91-usart.c:684:34: warning: ‘at91_usart_spi_dt_ids’ defined but not used [-Wunused-const-variable=]
> > >  684 | static const struct of_device_id at91_usart_spi_dt_ids[] = {
> > >  | ^~~~~~~~~~~~~~~~~~~~~
> > > 
> > > Cc: Radu Pirea <radu_nicolae.pirea@upb.ro>
> > > Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
> > > Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
> > > Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
> > > Signed-off-by: Lee Jones <lee.jones@linaro.org>
> > > ---
> > >  drivers/spi/spi-at91-usart.c | 1 +
> > >  1 file changed, 1 insertion(+)
> > > 
> > > diff --git a/drivers/spi/spi-at91-usart.c b/drivers/spi/spi-at91-usart.c
> > > index 88033422a42ae..d47a20be43ccd 100644
> > > --- a/drivers/spi/spi-at91-usart.c
> > > +++ b/drivers/spi/spi-at91-usart.c
> > > @@ -692,6 +692,7 @@ static struct platform_driver at91_usart_spi_driver = {
> > >  	.driver = {
> > >  		.name = "at91_usart_spi",
> > >  		.pm = &at91_usart_spi_pm_ops,
> > > +		.of_match_table = at91_usart_spi_dt_ids,
> > >  	},
> > >  	.probe = at91_usart_spi_probe,
> > >  	.remove = at91_usart_spi_remove,
> > 
> 
> -- 
> Lee Jones [李琼斯]
> Senior Technical Lead - Developer Services
> Linaro.org │ Open source software for Arm SoCs
> Follow Linaro: Facebook | Twitter | Blog

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

WARNING: multiple messages have this Message-ID (diff)
From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Lee Jones <lee.jones@linaro.org>
Cc: Radu Pirea <radu_nicolae.pirea@upb.ro>,
	linux-kernel@vger.kernel.org,
	Ludovic Desroches <ludovic.desroches@microchip.com>,
	broonie@kernel.org, linux-spi@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 12/14] spi: spi-at91-usart: Make use of the defined 'struct of_device_id'
Date: Thu, 16 Jul 2020 10:50:23 +0200	[thread overview]
Message-ID: <20200716085023.GA3428@piout.net> (raw)
In-Reply-To: <20200716075606.GM3165313@dell>

On 16/07/2020 08:56:06+0100, Lee Jones wrote:
> On Wed, 15 Jul 2020, Alexandre Belloni wrote:
> 
> > Hi Lee,
> > 
> > On 15/07/2020 16:06:30+0100, Lee Jones wrote:
> > > It's there so why not use it.
> > > 
> > 
> > Is that the correct resolution? Isn't the proper thing to do simply
> > removing at91_usart_spi_dt_ids as the only way it will ever be probed is
> > through drivers/mfd/at91-usart.c and I would think matching the driver
> > name is enough.
> 
> I'm 50/50 on this.
> 
> Happy with whatever the authors/maintainers decide most appropriate.
> 

Seeing that the compatible string is not documented or used by any dts,
I would go for the removal.

> > > Fixes the following W=1 kernel build warning(s):
> > > 
> > >  drivers/spi/spi-at91-usart.c:684:34: warning: ‘at91_usart_spi_dt_ids’ defined but not used [-Wunused-const-variable=]
> > >  684 | static const struct of_device_id at91_usart_spi_dt_ids[] = {
> > >  | ^~~~~~~~~~~~~~~~~~~~~
> > > 
> > > Cc: Radu Pirea <radu_nicolae.pirea@upb.ro>
> > > Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
> > > Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
> > > Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
> > > Signed-off-by: Lee Jones <lee.jones@linaro.org>
> > > ---
> > >  drivers/spi/spi-at91-usart.c | 1 +
> > >  1 file changed, 1 insertion(+)
> > > 
> > > diff --git a/drivers/spi/spi-at91-usart.c b/drivers/spi/spi-at91-usart.c
> > > index 88033422a42ae..d47a20be43ccd 100644
> > > --- a/drivers/spi/spi-at91-usart.c
> > > +++ b/drivers/spi/spi-at91-usart.c
> > > @@ -692,6 +692,7 @@ static struct platform_driver at91_usart_spi_driver = {
> > >  	.driver = {
> > >  		.name = "at91_usart_spi",
> > >  		.pm = &at91_usart_spi_pm_ops,
> > > +		.of_match_table = at91_usart_spi_dt_ids,
> > >  	},
> > >  	.probe = at91_usart_spi_probe,
> > >  	.remove = at91_usart_spi_remove,
> > 
> 
> -- 
> Lee Jones [李琼斯]
> Senior Technical Lead - Developer Services
> Linaro.org │ Open source software for Arm SoCs
> Follow Linaro: Facebook | Twitter | Blog

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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  reply	other threads:[~2020-07-16  8:50 UTC|newest]

Thread overview: 46+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-15 15:06 [PATCH 00/14] Rid W=1 warnings in SPI Lee Jones
2020-07-15 15:06 ` Lee Jones
2020-07-15 15:06 ` [PATCH 01/14] spi: spi-loopback-test: Fix formatting issues in function header blocks Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06 ` [PATCH 02/14] spi: spi-bitbang: Demote obvious misuse of kerneldoc to standard comment blocks Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06 ` [PATCH 03/14] spi: spi-davinci: Fix a few kerneldoc misspellings and API slippages Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06 ` [PATCH 04/14] spi: spi-ep93xx: Fix API slippage Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06 ` [PATCH 05/14] spi: spi-meson-spifc: Fix misdocumenting of 'dev' in 'struct meson_spifc' Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06 ` [PATCH 06/14] spi: spi-meson-spicc: Remove set but never used variable 'data' from meson_spicc_reset_fifo() Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06 ` [PATCH 07/14] spi: spi-s3c64xx: Add missing entries for structs 's3c64xx_spi_dma_data' and 's3c64xx_spi_dma_data' Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06 ` [PATCH 08/14] spi: spi-pl022: Provide missing struct attribute/function param docs Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-16 13:59   ` Linus Walleij
2020-07-16 13:59     ` Linus Walleij
2020-07-15 15:06 ` [PATCH 09/14] spi: spi-zynq-qspi: Add description for 2 missing attributes/parameters Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-16  7:19   ` Michal Simek
2020-07-16  7:19     ` Michal Simek
2020-07-15 15:06 ` [PATCH 10/14] spi: spi-zynqmp-gqspi: Correct a couple of misspellings in kerneldoc Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-16  7:20   ` Michal Simek
2020-07-16  7:20     ` Michal Simek
2020-07-15 15:06 ` [PATCH 11/14] spi: spi-topcliff-pch: Add missing descriptions to 'struct pch_spi_data' Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06 ` [PATCH 12/14] spi: spi-at91-usart: Make use of the defined 'struct of_device_id' Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 21:24   ` Alexandre Belloni
2020-07-15 21:24     ` Alexandre Belloni
2020-07-16  7:56     ` Lee Jones
2020-07-16  7:56       ` Lee Jones
2020-07-16  8:50       ` Alexandre Belloni [this message]
2020-07-16  8:50         ` Alexandre Belloni
2020-07-15 15:06 ` [PATCH 13/14] spi: spi-pxa2xx: Do not define 'struct acpi_device_id' when Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-15 15:06 ` [PATCH 14/14] spi: spi-amd: " Lee Jones
2020-07-15 15:06   ` Lee Jones
2020-07-20 11:12 ` [PATCH 00/14] Rid W=1 warnings in SPI Mark Brown
2020-07-20 11:12   ` Mark Brown

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