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Message-ID: <20230312094216.GC707@pendragon.ideasonboard.com>
Date: Sun, 12 Mar 2023 11:42:16 +0200
From: Laurent Pinchart <laurent.pinchart@...asonboard.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc: Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
Tony Lindgren <tony@...mide.com>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konrad.dybcio@...aro.org>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-omap@...r.kernel.org,
linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH 2/9] regulator: max20086: Mark OF related data as maybe
unused
Hi Krzysztof,
Thank you for the patch.
On Fri, Mar 10, 2023 at 10:45:46PM +0100, Krzysztof Kozlowski wrote:
> The driver can be compile tested with !CONFIG_OF making certain data
> unused:
>
> drivers/regulator/max20086-regulator.c:289:34: error: ‘max20086_dt_ids’ defined but not used [-Werror=unused-const-variable=]
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
> drivers/regulator/max20086-regulator.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/regulator/max20086-regulator.c b/drivers/regulator/max20086-regulator.c
> index b8bf76c170fe..c98a72f43935 100644
> --- a/drivers/regulator/max20086-regulator.c
> +++ b/drivers/regulator/max20086-regulator.c
> @@ -286,7 +286,7 @@ static const struct i2c_device_id max20086_i2c_id[] = {
>
> MODULE_DEVICE_TABLE(i2c, max20086_i2c_id);
>
> -static const struct of_device_id max20086_dt_ids[] = {
> +static const struct of_device_id max20086_dt_ids[] __maybe_unused = {
The following change would also work, as the of_match_table field of
struct device_driver isn't conditioned by CONFIG_OF:
diff --git a/drivers/regulator/max20086-regulator.c b/drivers/regulator/max20086-regulator.c
index b8bf76c170fe..ad92f84b4abb 100644
--- a/drivers/regulator/max20086-regulator.c
+++ b/drivers/regulator/max20086-regulator.c
@@ -320,7 +320,7 @@ MODULE_DEVICE_TABLE(of, max20086_dt_ids);
static struct i2c_driver max20086_regulator_driver = {
.driver = {
.name = "max20086",
- .of_match_table = of_match_ptr(max20086_dt_ids),
+ .of_match_table = max20086_dt_ids,
},
.probe_new = max20086_i2c_probe,
.id_table = max20086_i2c_id,
Your patch should reduce the module size without any real drawback as
far as I can see, so that's probably best. I'm fine with either
approach, so
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> {
> .compatible = "maxim,max20086",
> .data = &(const struct max20086_chip_info) {
--
Regards,
Laurent Pinchart
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