From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bjorn Andersson Subject: [PATCH v3 1/5] of/platform: Generalize /reserved-memory handling Date: Wed, 4 Oct 2017 20:32:54 -0700 Message-ID: <20171005033258.12825-2-bjorn.andersson@linaro.org> References: <20171005033258.12825-1-bjorn.andersson@linaro.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20171005033258.12825-1-bjorn.andersson@linaro.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Andy Gross , Anton Vorontsov , Colin Cross , Frank Rowand , Kees Cook , Rob Herring , Tony Luck Cc: devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, David Brown , linux-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org List-Id: devicetree@vger.kernel.org By iterating over all /reserved-memory child nodes and match each one to a list of compatibles that we want to treat specially, we can easily extend the list of compatibles to handle - without having to resort to of_platform_populate() that would create unnecessary platform_devices. Signed-off-by: Bjorn Andersson --- Changes since v2: - Simplify logic per Rob's suggestion. Changes since v1: - New patch drivers/of/platform.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/drivers/of/platform.c b/drivers/of/platform.c index b19524623498..ee89f096f0f3 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -497,6 +497,11 @@ int of_platform_default_populate(struct device_node *root, EXPORT_SYMBOL_GPL(of_platform_default_populate); #ifndef CONFIG_PPC +static const struct of_device_id reserved_mem_matches[] = { + { .compatible = "ramoops" }, + {} +}; + static int __init of_platform_default_populate_init(void) { struct device_node *node; @@ -505,15 +510,12 @@ static int __init of_platform_default_populate_init(void) return -ENODEV; /* - * Handle ramoops explicitly, since it is inside /reserved-memory, - * which lacks a "compatible" property. + * Handle certain compatibles explicitly, since we don't want to create + * platform_devices for every node in /reserved-memory with a + * "compatible", */ - node = of_find_node_by_path("/reserved-memory"); - if (node) { - node = of_find_compatible_node(node, NULL, "ramoops"); - if (node) - of_platform_device_create(node, NULL, NULL); - } + for_each_matching_node(node, reserved_mem_matches) + of_platform_device_create(node, NULL, NULL); /* Populate everything else. */ of_platform_default_populate(NULL, NULL, NULL); -- 2.12.0