soc: qcom: pd-mapper: mark qcom_pdm_domains as __maybe_unused

The qcom_pdm_domains[] array is used only when passing it into of_match_node()
but is not also referenced by MODULE_DEVICE_TABLE() or the platform driver
as a table. When CONFIG_OF is disabled, this causes a harmless build warning:

drivers/soc/qcom/qcom_pd_mapper.c:520:34: error: 'qcom_pdm_domains' defined but not used [-Werror=unused-const-variable=]

Avoid this by marking the variable as __maybe_unused. This also makes it
clear that anything referenced by it will be dropped by the compiler when
it is unused.

Fixes: 1ebcde047c54 ("soc: qcom: add pd-mapper implementation")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240719101238.199850-1-arnd@kernel.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/soc/qcom/qcom_pd_mapper.c b/drivers/soc/qcom/qcom_pd_mapper.c
index a4c0070806650361601f2fd7461bba2a12fd23a0..9afa09c3920e1076bd7fe4239d0448d3af5c42f1 100644 (file)
--- a/drivers/soc/qcom/qcom_pd_mapper.c
+++ b/drivers/soc/qcom/qcom_pd_mapper.c
@@ -517,7 +517,7 @@ static const struct qcom_pdm_domain_data *sm8550_domains[] = {
        NULL,
 };
 
-static const struct of_device_id qcom_pdm_domains[] = {
+static const struct of_device_id qcom_pdm_domains[] __maybe_unused = {
        { .compatible = "qcom,apq8064", .data = NULL, },
        { .compatible = "qcom,apq8074", .data = NULL, },
        { .compatible = "qcom,apq8084", .data = NULL, },