On 2020-09-18 09:55, Joerg Roedel wrote:
On Thu, Sep 10, 2020 at 01:25:38PM +0100, Tom Murphy wrote:
init_iova_flush_queue can fail if we run out of memory. Fall back to noflush
queue if it fails.
Signed-off-by: Tom Murphy <murph...@tcd.ie>
---
drivers/iommu/dma-iommu.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index 4959f5df21bd..5f69126f3e91 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -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) {
- cookie->fq_domain = domain;
- init_iova_flush_queue(iovad, iommu_dma_flush_iotlb_all, NULL);
+ 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;
}
if (!dev)
Looks good to me, but Robin should also have a look.
Yup, seems reasonable, thanks Tom!
Reviewed-by: Robin Murphy <robin.mur...@arm.com>
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