Commit b34e9b0d authored Sep 10, 2020 by Tom Murphy Committed by Joerg Roedel Sep 18, 2020

iommu/dma: Handle init_iova_flush_queue() failure in dma-iommu path



The init_iova_flush_queue() function can fail if we run out of memory. Fall
back to noflush queue if it fails.

Signed-off-by: Tom Murphy <murphyt7@tcd.ie>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/20200910122539.3662-1-murphyt7@tcd.ie


Signed-off-by: Joerg Roedel <jroedel@suse.de>

parent ba328f82

drivers/iommu/dma-iommu.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -343,8 +343,11 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base,

		if (!cookie->fq_domain && !iommu_domain_get_attr(domain,
		DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, &attr) && attr) {
		if (init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all,
		NULL))
		pr_warn("iova flush queue initialization failed\n");
		else
		cookie->fq_domain = domain;
		init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all, NULL);
		}

		if (!dev)

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