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Commit 20f21cba authored by Mitchel Humpherys's avatar Mitchel Humpherys Committed by Matt Wagantall
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iommu/arm-smmu: use a threaded handler for global faults 



We need to do some sleeping operations (like enabling clocks) in the
global fault handler.  Move to a threaded handler to avoid BUGs due to
sleeping in an atomic context.

Change-Id: I88eed743bfad4cc33daf3b9f81255587c72b0167
Signed-off-by: default avatarMitchel Humpherys <mitchelh@codeaurora.org>
parent 4cb9bcb3

drivers/iommu/arm-smmu.c

+4 −5
Original line number Diff line number Diff line
@@ -2588,11 +2588,10 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev) 
	}



	for (i = 0; i < smmu->num_global_irqs; ++i) {

		err = request_irq(smmu->irqs[i],

				  arm_smmu_global_fault,

				  IRQF_SHARED,

				  "arm-smmu global fault",

				  smmu);

		err = request_threaded_irq(smmu->irqs[i],

					NULL, arm_smmu_global_fault,

					IRQF_ONESHOT | IRQF_SHARED,

					"arm-smmu global fault", smmu);

		if (err) {

			dev_err(dev, "failed to request global IRQ %d (%u)\n",

				i, smmu->irqs[i]);