Merge tag 'v6.2' into iommufd.git for-next

Resolve conflicts from the signature change in iommu_map:

 - drivers/infiniband/hw/usnic/usnic_uiom.c
   Switch iommu_map_atomic() to iommu_map(.., GFP_ATOMIC)

 - drivers/vfio/vfio_iommu_type1.c
   Following indenting change for GFP_KERNEL

Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

1 files changed, 15 insertions, 6 deletions

diff --git a/drivers/of/address.c b/drivers/of/address.c
index c34ac33b7338..67763e5b8c0e 100644
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -965,8 +965,19 @@ int of_dma_get_range(struct device_node *np, const struct bus_dma_region **map)
 	}
 
 	of_dma_range_parser_init(&parser, node);
-	for_each_of_range(&parser, &range)
+	for_each_of_range(&parser, &range) {
+		if (range.cpu_addr == OF_BAD_ADDR) {
+			pr_err("translation of DMA address(%llx) to CPU address failed node(%pOF)\n",
+			       range.bus_addr, node);
+			continue;
+		}
 		num_ranges++;
+	}
+
+	if (!num_ranges) {
+		ret = -EINVAL;
+		goto out;
+	}
 
 	r = kcalloc(num_ranges + 1, sizeof(*r), GFP_KERNEL);
 	if (!r) {
@@ -975,18 +986,16 @@ int of_dma_get_range(struct device_node *np, const struct bus_dma_region **map)
 	}
 
 	/*
-	 * Record all info in the generic DMA ranges array for struct device.
+	 * Record all info in the generic DMA ranges array for struct device,
+	 * returning an error if we don't find any parsable ranges.
 	 */
 	*map = r;
 	of_dma_range_parser_init(&parser, node);
 	for_each_of_range(&parser, &range) {
 		pr_debug("dma_addr(%llx) cpu_addr(%llx) size(%llx)\n",
 			 range.bus_addr, range.cpu_addr, range.size);
-		if (range.cpu_addr == OF_BAD_ADDR) {
-			pr_err("translation of DMA address(%llx) to CPU address failed node(%pOF)\n",
-			       range.bus_addr, node);
+		if (range.cpu_addr == OF_BAD_ADDR)
 			continue;
-		}
 		r->cpu_start = range.cpu_addr;
 		r->dma_start = range.bus_addr;
 		r->size = range.size;