Without CONFIG_OF, there is no reference to the apcs_clk_match_table[] array, causing a harmless warning: drivers/mailbox/qcom-apcs-ipc-mailbox.c:57:28: error: unused variable 'apcs_clk_match_table' [-Werror,-Wunused-variable] const struct of_device_id apcs_clk_match_table[] = { Move the variable out of the variable scope and mark it 'static' to avoid the warning (static const variables get silently dropped by the compiler), and avoid the on-stack copy at the same time. Fixes: 78c86458a440 ("mbox: qcom: add APCS child device for QCS404") Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/mailbox/qcom-apcs-ipc-mailbox.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/mailbox/qcom-apcs-ipc-mailbox.c b/drivers/mailbox/qcom-apcs-ipc-mailbox.c index eeebafd546e5..10557a950c2d 100644 --- a/drivers/mailbox/qcom-apcs-ipc-mailbox.c +++ b/drivers/mailbox/qcom-apcs-ipc-mailbox.c @@ -45,6 +45,12 @@ static const struct mbox_chan_ops qcom_apcs_ipc_ops = { .send_data = qcom_apcs_ipc_send_data, }; +static const struct of_device_id apcs_clk_match_table[] = { + { .compatible = "qcom,msm8916-apcs-kpss-global", }, + { .compatible = "qcom,qcs404-apcs-apps-global", }, + {} +}; + static int qcom_apcs_ipc_probe(struct platform_device *pdev) { struct qcom_apcs_ipc *apcs; @@ -54,11 +60,6 @@ static int qcom_apcs_ipc_probe(struct platform_device *pdev) void __iomem *base; unsigned long i; int ret; - const struct of_device_id apcs_clk_match_table[] = { - { .compatible = "qcom,msm8916-apcs-kpss-global", }, - { .compatible = "qcom,qcs404-apcs-apps-global", }, - {} - }; apcs = devm_kzalloc(&pdev->dev, sizeof(*apcs), GFP_KERNEL); if (!apcs) -- 2.20.0