From: Jonathan Cameron <jic23@kernel.org>
To: "Arnd Bergmann" <arnd@arndb.de>
Cc: "Krzysztof Kozlowski" <krzysztof.kozlowski@linaro.org>,
"Arnd Bergmann" <arnd@kernel.org>,
linux-kernel@vger.kernel.org,
"Lars-Peter Clausen" <lars@metafoo.de>,
"Michael Hennerich" <Michael.Hennerich@analog.com>,
linux-iio@vger.kernel.org
Subject: Re: [PATCH 16/34] iio: ad5755: hook up of_device_id lookup to platform driver
Date: Sat, 6 Apr 2024 16:30:13 +0100 [thread overview]
Message-ID: <20240406163013.76e4646e@jic23-huawei> (raw)
In-Reply-To: <65788cd8-3c2d-48ca-8b58-af741884c729@app.fastmail.com>
On Wed, 03 Apr 2024 12:01:13 +0200
"Arnd Bergmann" <arnd@arndb.de> wrote:
> On Wed, Apr 3, 2024, at 11:55, Krzysztof Kozlowski wrote:
> > On 03/04/2024 10:06, Arnd Bergmann wrote:
> >> From: Arnd Bergmann <arnd@arndb.de>
> >>
> >> When the driver is built-in, 'make W=1' warns about an unused
> >> ID table:
> >>
> >> drivers/iio/dac/ad5755.c:866:34: error: 'ad5755_of_match' defined but not used [-Werror=unused-const-variable=]
> >> 866 | static const struct of_device_id ad5755_of_match[] = {
> >>
> >> While the data is duplicated in the spi_device_id, it's common
> >> to use the actual OF compatible strings in the driver.
> >>
> >> Since there are no in-tree users of plain platform devices, the
> >> spi_device_id table could actually be dropped entirely with this.
> >>
> >> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> >> ---
> >> drivers/iio/dac/ad5755.c | 1 +
> >> 1 file changed, 1 insertion(+)
> >>
> >> diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c
> >> index 404865e35460..5c1e7f428c25 100644
> >> --- a/drivers/iio/dac/ad5755.c
> >> +++ b/drivers/iio/dac/ad5755.c
> >> @@ -876,6 +876,7 @@ MODULE_DEVICE_TABLE(of, ad5755_of_match);
> >> static struct spi_driver ad5755_driver = {
> >> .driver = {
> >> .name = "ad5755",
> >> + .of_match_table = ad5755_of_match,
> >
> > I was working on this as well and have a bit bigger solution, following
> > Jonathan's preference (I think):
> >
> > https://lore.kernel.org/all/20240226192555.14aa178e@jic23-huawei/
> >
> > I need to send v3, somehow I missed his comments.
>
> Yes, that looks good as well, though you might need to drop
> spi_device_id table if you convert it to using pointers.
Put them in there as well (with appropriate cast). We don't want
to stop supporting probe paths that might be using that.
My preference is for both tables, same pointers in each then
the use of the relevant bus specific wrapper - here
spi_get_device_match_data() which will happily deal with matches
in either table (thus avoiding the potential mess of them getting out
of sync)
Jonathan
>
> Arnd
next prev parent reply other threads:[~2024-04-06 15:30 UTC|newest]
Thread overview: 140+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-03 8:06 [PATCH 00/34] address all -Wunused-const warnings Arnd Bergmann
2024-04-03 8:06 ` Arnd Bergmann
2024-04-03 8:06 ` Arnd Bergmann
2024-04-03 8:06 ` [PATCH 01/34] powerpc/fsl-soc: hide unused const variable Arnd Bergmann
2024-04-03 8:06 ` Arnd Bergmann
2024-04-03 8:19 ` Christophe Leroy
2024-04-03 8:19 ` Christophe Leroy
2024-04-03 8:06 ` [PATCH 02/34] ubsan: fix unused variable warning in test module Arnd Bergmann
2024-04-03 21:36 ` (subset) " Kees Cook
2024-04-03 8:06 ` [PATCH 03/34] platform: goldfish: remove ACPI_PTR() annotations Arnd Bergmann
2024-04-03 9:08 ` Andy Shevchenko
2024-04-03 8:06 ` [PATCH 04/34] i2c: pxa: hide unused icr_bits[] variable Arnd Bergmann
2024-04-03 23:17 ` Andi Shyti
2024-04-03 8:06 ` [PATCH 05/34] 3c515: remove unused 'mtu' variable Arnd Bergmann
2024-04-03 8:06 ` [PATCH 06/34] tracing: hide unused ftrace_event_id_fops Arnd Bergmann
2024-04-03 8:06 ` [PATCH 07/34] Input: stmpe-ts - mark OF related data as maybe unused Arnd Bergmann
2024-04-03 8:06 ` Arnd Bergmann
2024-04-03 9:40 ` Andy Shevchenko
2024-04-03 9:40 ` Andy Shevchenko
2024-04-03 9:52 ` Krzysztof Kozlowski
2024-04-03 9:52 ` Krzysztof Kozlowski
2024-04-03 10:03 ` Andy Shevchenko
2024-04-03 10:03 ` Andy Shevchenko
2024-04-03 10:10 ` Krzysztof Kozlowski
2024-04-03 10:10 ` Krzysztof Kozlowski
2024-04-03 13:17 ` Uwe Kleine-König
2024-04-03 13:17 ` Uwe Kleine-König
2024-04-03 13:27 ` Uwe Kleine-König
2024-04-03 13:27 ` Uwe Kleine-König
2024-04-03 8:06 ` [PATCH 08/34] Input: synaptics: hide unused smbus_pnp_ids[] array Arnd Bergmann
2024-04-03 8:06 ` [PATCH 09/34] power: rt9455: hide unused rt9455_boost_voltage_values Arnd Bergmann
2024-04-03 8:06 ` [PATCH 10/34] efi: sysfb: don't build when EFI is disabled Arnd Bergmann
2024-04-03 13:03 ` Ard Biesheuvel
2024-04-03 13:15 ` Javier Martinez Canillas
2024-04-03 8:06 ` [PATCH 11/34] clk: ti: dpll: fix incorrect #ifdef checks Arnd Bergmann
2024-04-03 9:00 ` Tony Lindgren
2024-04-05 21:13 ` Stephen Boyd
2024-04-03 8:06 ` [PATCH 12/34] apm-emulation: hide an unused variable Arnd Bergmann
2024-04-03 12:23 ` Jiri Kosina
2024-04-03 8:06 ` [PATCH 13/34] sisfb: hide unused variables Arnd Bergmann
2024-04-03 12:39 ` Helge Deller
2024-04-03 8:06 ` [PATCH 14/34] dma/congiguous: avoid warning about unused size_bytes Arnd Bergmann
2024-04-03 9:42 ` Christoph Hellwig
2024-04-03 8:06 ` [PATCH 15/34] leds: apu: remove duplicate DMI lookup data Arnd Bergmann
2024-04-11 15:51 ` (subset) " Lee Jones
2024-04-03 8:06 ` [PATCH 16/34] iio: ad5755: hook up of_device_id lookup to platform driver Arnd Bergmann
2024-04-03 9:36 ` Andy Shevchenko
2024-04-03 9:55 ` Krzysztof Kozlowski
2024-04-03 10:01 ` Arnd Bergmann
2024-04-06 15:30 ` Jonathan Cameron [this message]
2024-04-06 15:31 ` Jonathan Cameron
2024-04-03 8:06 ` [PATCH 17/34] greybus: arche-ctrl: move device table to its right location Arnd Bergmann
2024-04-30 23:41 ` Alex Elder
2024-04-03 8:06 ` [PATCH 18/34] lib: checksum: hide unused expected_csum_ipv6_magic[] Arnd Bergmann
2024-04-03 8:41 ` Christophe Leroy
2024-04-03 8:58 ` Arnd Bergmann
2024-04-03 9:03 ` Christophe Leroy
2024-04-04 11:43 ` Arnd Bergmann
2024-04-03 8:06 ` [PATCH 19/34] sunrpc: suppress warnings for unused procfs functions Arnd Bergmann
2024-04-03 8:59 ` Jeff Layton
2024-04-03 13:20 ` Chuck Lever
2024-04-03 8:06 ` [PATCH 20/34] comedi: ni_atmio: avoid warning for unused device_ids[] table Arnd Bergmann
2024-04-03 8:06 ` [PATCH 21/34] iwlegacy: don't warn for unused variables with DEBUG_FS=n Arnd Bergmann
2024-04-03 9:33 ` Andy Shevchenko
2024-04-03 14:26 ` Jeff Johnson
2024-04-03 8:06 ` [PATCH 22/34] drm/komeda: don't warn for unused debugfs files Arnd Bergmann
2024-04-03 8:06 ` [PATCH 23/34] firmware: qcom_scm: mark qcom_scm_qseecom_allowlist as __maybe_unused Arnd Bergmann
2024-04-03 9:31 ` Krzysztof Kozlowski
2024-04-03 8:06 ` [PATCH 24/34] crypto: ccp - drop platform ifdef checks Arnd Bergmann
2024-04-03 15:17 ` Tom Lendacky
2024-04-03 15:50 ` Arnd Bergmann
2024-04-12 7:30 ` Herbert Xu
2024-04-03 8:06 ` [PATCH 25/34] usb: gadget: omap_udc: remove unused variable Arnd Bergmann
2024-04-05 22:51 ` Aaro Koskinen
2024-04-03 8:06 ` [PATCH 26/34] isdn: kcapi: don't build unused procfs code Arnd Bergmann
2024-04-03 8:06 ` [PATCH 27/34] cpufreq: intel_pstate: hide unused intel_pstate_cpu_oob_ids[] Arnd Bergmann
2024-04-03 14:43 ` Rafael J. Wysocki
2024-04-03 8:06 ` [PATCH 28/34] net: xgbe: remove extraneous #ifdef checks Arnd Bergmann
2024-04-03 8:06 ` [PATCH 29/34] Input: imagis - remove incorrect ifdef checks Arnd Bergmann
2024-04-03 8:06 ` [PATCH 30/34] sata: mv: drop unnecessary #ifdef checks Arnd Bergmann
2024-04-03 8:29 ` Damien Le Moal
2024-04-03 8:32 ` Damien Le Moal
2024-04-03 8:50 ` Arnd Bergmann
2024-04-04 3:45 ` Damien Le Moal
2024-04-03 9:10 ` Andy Shevchenko
2024-04-03 8:06 ` [PATCH 31/34] spi: remove incorrect of_match_ptr annotations Arnd Bergmann
2024-04-03 8:06 ` Arnd Bergmann
2024-04-03 8:06 ` Arnd Bergmann
2024-04-03 8:06 ` Arnd Bergmann
2024-04-03 9:04 ` Andy Shevchenko
2024-04-03 9:04 ` Andy Shevchenko
2024-04-03 9:04 ` Andy Shevchenko
2024-04-03 9:04 ` Andy Shevchenko
2024-04-03 9:05 ` Krzysztof Kozlowski
2024-04-03 9:05 ` Krzysztof Kozlowski
2024-04-03 9:05 ` Krzysztof Kozlowski
2024-04-03 9:05 ` Krzysztof Kozlowski
2024-04-03 9:56 ` Mark Brown
2024-04-03 9:56 ` Mark Brown
2024-04-03 9:56 ` Mark Brown
2024-04-03 9:56 ` Mark Brown
2024-04-03 21:05 ` Uwe Kleine-König
2024-04-03 21:05 ` Uwe Kleine-König
2024-04-03 21:05 ` Uwe Kleine-König
2024-04-03 21:05 ` Uwe Kleine-König
2024-04-03 21:13 ` Andy Shevchenko
2024-04-03 21:13 ` Andy Shevchenko
2024-04-03 21:13 ` Andy Shevchenko
2024-04-03 21:13 ` Andy Shevchenko
2024-04-03 22:19 ` Arnd Bergmann
2024-04-03 22:19 ` Arnd Bergmann
2024-04-03 22:19 ` Arnd Bergmann
2024-04-03 22:19 ` Arnd Bergmann
2024-04-03 8:06 ` [PATCH 32/34] ASoC: remove incorrect of_match_ptr/ACPI_PTR annotations Arnd Bergmann
2024-04-03 8:06 ` Arnd Bergmann
2024-04-03 9:06 ` Krzysztof Kozlowski
2024-04-03 9:06 ` Krzysztof Kozlowski
2024-04-03 9:15 ` Andy Shevchenko
2024-04-03 9:15 ` Andy Shevchenko
2024-04-03 8:06 ` [PATCH 33/34] drivers: " Arnd Bergmann
2024-04-03 9:13 ` Krzysztof Kozlowski
2024-04-03 9:30 ` Andy Shevchenko
2024-04-03 12:47 ` Corey Minyard
2024-04-03 13:23 ` Andy Shevchenko
2024-04-03 12:47 ` Corey Minyard
2024-04-03 16:09 ` Jarkko Sakkinen
2024-04-09 13:48 ` Greg Kroah-Hartman
2024-04-23 7:33 ` Xu Yilun
2024-04-23 9:52 ` Peter Rosin
2024-04-03 8:06 ` [PATCH 34/34] kbuild: always enable -Wunused-const-variable Arnd Bergmann
2024-04-03 9:19 ` Andy Shevchenko
2024-04-03 9:26 ` Arnd Bergmann
2024-04-06 5:20 ` [PATCH 00/34] address all -Wunused-const warnings patchwork-bot+netdevbpf
2024-04-06 5:20 ` patchwork-bot+netdevbpf
2024-04-10 8:02 ` (subset) " Sebastian Reichel
2024-04-10 8:02 ` Sebastian Reichel
2024-04-22 8:16 ` Michael Ellerman
2024-04-22 8:16 ` Michael Ellerman
2024-04-22 8:16 ` Michael Ellerman
2024-04-22 8:16 ` Michael Ellerman
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