blob: 7433043b192b7fe1665b3866519cd92764a046b2 [file] [log] [blame]
From e500842b21ca7203cbd58aff40737494fe21aaf4 Mon Sep 17 00:00:00 2001
From: Jean-Philippe Brucker <jean-philippe@linaro.org>
Date: Mon, 11 Nov 2019 12:17:20 +0100
Subject: [PATCH] iommu/arm-smmu-v3: Don't display an error when IRQ lines are
missing
commit f7aff1a93f52047739af31072de0ad8d149641f3 upstream.
Since commit 7723f4c5ecdb ("driver core: platform: Add an error message
to platform_get_irq*()"), platform_get_irq_byname() displays an error
when the IRQ isn't found. Since the SMMUv3 driver uses that function to
query which interrupt method is available, the message is now displayed
during boot for any SMMUv3 that doesn't implement the combined
interrupt, or that implements MSIs.
[ 20.700337] arm-smmu-v3 arm-smmu-v3.7.auto: IRQ combined not found
[ 20.706508] arm-smmu-v3 arm-smmu-v3.7.auto: IRQ eventq not found
[ 20.712503] arm-smmu-v3 arm-smmu-v3.7.auto: IRQ priq not found
[ 20.718325] arm-smmu-v3 arm-smmu-v3.7.auto: IRQ gerror not found
Use platform_get_irq_byname_optional() to avoid displaying a spurious
error.
Fixes: 7723f4c5ecdb ("driver core: platform: Add an error message to platform_get_irq*()")
Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Acked-by: Will Deacon <will@kernel.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 9b28c9807d2f..0ca59689e6ed 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -3088,19 +3088,19 @@ static int arm_smmu_device_probe(struct platform_device *pdev)
/* Interrupt lines */
- irq = platform_get_irq_byname(pdev, "combined");
+ irq = platform_get_irq_byname_optional(pdev, "combined");
if (irq > 0)
smmu->combined_irq = irq;
else {
- irq = platform_get_irq_byname(pdev, "eventq");
+ irq = platform_get_irq_byname_optional(pdev, "eventq");
if (irq > 0)
smmu->evtq.q.irq = irq;
- irq = platform_get_irq_byname(pdev, "priq");
+ irq = platform_get_irq_byname_optional(pdev, "priq");
if (irq > 0)
smmu->priq.q.irq = irq;
- irq = platform_get_irq_byname(pdev, "gerror");
+ irq = platform_get_irq_byname_optional(pdev, "gerror");
if (irq > 0)
smmu->gerr_irq = irq;
}
--
2.7.4