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[24.155.109.49]) by smtp.googlemail.com with ESMTPSA id j11sm339866otk.80.2019.09.26.17.25.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Sep 2019 17:25:05 -0700 (PDT) From: Rob Herring To: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190927002455.13169-1-robh@kernel.org> References: <20190927002455.13169-1-robh@kernel.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190926_172507_366007_D5FB7C13 X-CRM114-Status: GOOD ( 12.93 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Florian Fainelli , Arnd Bergmann , Frank Rowand , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Marek Vasut , Lorenzo Pieralisi , Oza Pawandeep , Stefan Wahren , Simon Horman , Geert Uytterhoeven , Robin Murphy , Nicolas Saenz Julienne Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel