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Commit 1faa311f authored by Patrick Daly's avatar Patrick Daly
Browse files

iommu: arm-smmu: Use remote_spin_lock_irqsave() variant 



Use of irqsave() locking variants are preferred since they restore
interrupts properly both if either locks are nested or not nested.

Change-Id: I7d794ca9a5e850683403b0e4696e4f317f05cf21
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
parent 6b8f1b71

drivers/iommu/arm-smmu.c

+3 −2
Original line number Diff line number Diff line
@@ -4534,13 +4534,14 @@ static void qsmmuv500_errata1_tlb_inv_context(void *cookie) 
	struct qsmmuv500_archdata *data =

			get_qsmmuv500_archdata(smmu_domain->smmu);

	ktime_t cur;

	unsigned long flags;

	bool errata;



	cur = ktime_get();

	trace_errata_tlbi_start(dev, 0);



	errata = qsmmuv500_errata1_required(smmu_domain, data);

	remote_spin_lock(&data->errata1_lock);

	remote_spin_lock_irqsave(&data->errata1_lock, flags);

	if (errata) {

		s64 delta;
@@ -4554,7 +4555,7 @@ static void qsmmuv500_errata1_tlb_inv_context(void *cookie) 
	} else {

		__qsmmuv500_errata1_tlbiall(smmu_domain);

	}

	remote_spin_unlock(&data->errata1_lock);

	remote_spin_unlock_irqrestore(&data->errata1_lock, flags);



	trace_errata_tlbi_end(dev, ktime_us_delta(ktime_get(), cur));

}