linux-kernel - [PATCH v2] iommu/arm-smmu: Mark qcom_smmu_client_of

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Date:   Thu,  4 Jun 2020 14:39:04 -0600
From:   Jordan Crouse <jcrouse@...eaurora.org>
To:     linux-arm-msm@...r.kernel.org
Cc:     Joerg Roedel <joro@...tes.org>,
        Robin Murphy <robin.murphy@....com>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Will Deacon <will@...nel.org>,
        iommu@...ts.linux-foundation.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] iommu/arm-smmu: Mark qcom_smmu_client_of_match as possibly unused

When CONFIG_OF=n of_match_device() gets pre-processed out of existence
leaving qcom-smmu_client_of_match unused. Mark it as possibly unused to
keep the compiler from warning in that case.

Fixes: 0e764a01015d ("iommu/arm-smmu: Allow client devices to select direct mapping")
Reported-by: kbuild test robot <lkp@...el.com>
Acked-by: Will Deacon <will@...nel.org>
Signed-off-by: Jordan Crouse <jcrouse@...eaurora.org>
---

 drivers/iommu/arm-smmu-qcom.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/arm-smmu-qcom.c b/drivers/iommu/arm-smmu-qcom.c
index cf01d0215a39..be4318044f96 100644
--- a/drivers/iommu/arm-smmu-qcom.c
+++ b/drivers/iommu/arm-smmu-qcom.c
@@ -12,7 +12,7 @@ struct qcom_smmu {
 	struct arm_smmu_device smmu;
 };
 
-static const struct of_device_id qcom_smmu_client_of_match[] = {
+static const struct of_device_id qcom_smmu_client_of_match[] __maybe_unused = {
 	{ .compatible = "qcom,adreno" },
 	{ .compatible = "qcom,mdp4" },
 	{ .compatible = "qcom,mdss" },
-- 
2.17.1