linux-kernel - [PATCH] iommu/arm-smmu: Demote error messages to debug in shutdown callback

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Message-Id: <20200327132852.10352-1-saiprakash.ranjan@codeaurora.org>
Date:   Fri, 27 Mar 2020 18:58:52 +0530
From:   Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
To:     Robin Murphy <robin.murphy@....com>, Will Deacon <will@...nel.org>,
        Joerg Roedel <joro@...tes.org>,
        iommu@...ts.linux-foundation.org,
        Douglas Anderson <dianders@...omium.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Subject: [PATCH] iommu/arm-smmu: Demote error messages to debug in shutdown callback

Currently on reboot/shutdown, the following messages are
displayed on the console as error messages before the
system reboots/shutdown.

On SC7180:

  arm-smmu 15000000.iommu: removing device with active domains!
  arm-smmu 5040000.iommu: removing device with active domains!

Demote the log level to debug since it does not offer much
help in identifying/fixing any issue as the system is anyways
going down and reduce spamming the kernel log.

Reported-by: Douglas Anderson <dianders@...omium.org>
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
---
 drivers/iommu/arm-smmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
index 16c4b87af42b..0a865e32054a 100644
--- a/drivers/iommu/arm-smmu.c
+++ b/drivers/iommu/arm-smmu.c
@@ -2250,7 +2250,7 @@ static int arm_smmu_device_remove(struct platform_device *pdev)
 		return -ENODEV;
 
 	if (!bitmap_empty(smmu->context_map, ARM_SMMU_MAX_CBS))
-		dev_err(&pdev->dev, "removing device with active domains!\n");
+		dev_dbg(&pdev->dev, "removing device with active domains!\n");
 
 	arm_smmu_bus_init(NULL);
 	iommu_device_unregister(&smmu->iommu);
-- 
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