diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0441-of-address-Introduce-of_get_next_dma_parent-helper.patch')
-rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0441-of-address-Introduce-of_get_next_dma_parent-helper.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0441-of-address-Introduce-of_get_next_dma_parent-helper.patch b/target/linux/bcm27xx/patches-5.4/950-0441-of-address-Introduce-of_get_next_dma_parent-helper.patch new file mode 100644 index 0000000000..1056cfc60d --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0441-of-address-Introduce-of_get_next_dma_parent-helper.patch @@ -0,0 +1,39 @@ +From 25ab98ceb9844642c994b5766de1033552d1aef2 Mon Sep 17 00:00:00 2001 +From: Robin Murphy <robin.murphy@arm.com> +Date: Wed, 3 Jul 2019 18:23:01 +0100 +Subject: [PATCH] of/address: Introduce of_get_next_dma_parent() helper + +commit 862ab5578f754117742c8b8c8e5ddf98bdb190ba upstream. + +Add of_get_next_dma_parent() helper which is similar to +__of_get_dma_parent(), but can be used in iterators and decrements the +ref count on the prior parent. + +Signed-off-by: Robin Murphy <robin.murphy@arm.com> +Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> +Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> +Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> +Signed-off-by: Rob Herring <robh@kernel.org> +--- + drivers/of/address.c | 10 ++++++++++ + 1 file changed, 10 insertions(+) + +--- a/drivers/of/address.c ++++ b/drivers/of/address.c +@@ -695,6 +695,16 @@ static struct device_node *__of_get_dma_ + return of_node_get(args.np); + } + ++static struct device_node *of_get_next_dma_parent(struct device_node *np) ++{ ++ struct device_node *parent; ++ ++ parent = __of_get_dma_parent(np); ++ of_node_put(np); ++ ++ return parent; ++} ++ + u64 of_translate_dma_address(struct device_node *dev, const __be32 *in_addr) + { + struct device_node *host; |