Add support for the DMA_ATTR_NO_WARN attribute on powerpc iommu code.
Signed-off-by: Mauricio Faria de Oliveira <mauri...@linux.vnet.ibm.com>
---
arch/powerpc/kernel/iommu.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 37d6e74..5f202a5 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -479,7 +479,8 @@ int ppc_iommu_map_sg(struct device *dev, struct iommu_table
*tbl,
/* Handle failure */
if (unlikely(entry == DMA_ERROR_CODE)) {
- if (printk_ratelimit())
+ if (!(attrs & DMA_ATTR_NO_WARN) &&
+ printk_ratelimit())
dev_info(dev, "iommu_alloc failed, tbl %p "
"vaddr %lx npages %lu\n", tbl, vaddr,
npages);
@@ -776,7 +777,8 @@ dma_addr_t iommu_map_page(struct device *dev, struct
iommu_table *tbl,
mask >> tbl->it_page_shift, align,
attrs);
if (dma_handle == DMA_ERROR_CODE) {
- if (printk_ratelimit()) {
+ if (!(attrs & DMA_ATTR_NO_WARN) &&
+ printk_ratelimit()) {
dev_info(dev, "iommu_alloc failed, tbl %p "
"vaddr %p npages %d\n", tbl, vaddr,
npages);
--
1.8.3.1
--
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