From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: [PATCH 06/11] of/address: Introduce of_get_next_dma_parent() helper Date: Thu, 26 Sep 2019 19:24:50 -0500 Message-ID: <20190927002455.13169-7-robh@kernel.org> References: <20190927002455.13169-1-robh@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <20190927002455.13169-1-robh@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Nicolas Saenz Julienne , Robin Murphy , Florian Fainelli , Stefan Wahren , Frank Rowand , Arnd Bergmann , Marek Vasut , Geert Uytterhoeven , Simon Horman , Lorenzo Pieralisi , Oza Pawandeep List-Id: devicetree@vger.kernel.org From: Robin Murphy 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 Signed-off-by: Rob Herring --- drivers/of/address.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/of/address.c b/drivers/of/address.c index 53d2656c2269..e9188c82fdae 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -695,6 +695,16 @@ static struct device_node *__of_get_dma_parent(const struct device_node *np) 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; -- 2.20.1