[PATCH v4 1/9] drivers/of: Introduce of_node_alloc
From: Frank Rowand <hidden>
Date: 2015-09-28 22:50:50
Also in:
linux-acpi, linux-devicetree, lkml
On 9/28/2015 9:42 AM, Marc Zyngier wrote:
quoted hunk ↗ jump to hunk
We want to be able to generate "fake" device nodes that can be used as an identifier for irq domains. For that, we reuse the dynamic DT layer in order to generate DT nodes in a detached state (so that it doesn't interfere with the rest of the tree). Signed-off-by: Marc Zyngier <redacted> --- drivers/of/dynamic.c | 22 ++++++++++++++++++++++ include/linux/of.h | 5 +++++ 2 files changed, 27 insertions(+)diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c index 53826b8..709d363 100644 --- a/drivers/of/dynamic.c +++ b/drivers/of/dynamic.c@@ -445,6 +445,28 @@ struct device_node *__of_node_dup(const struct device_node *np, const char *fmt, return NULL; } +/** + * of_node_alloc() - Allocate an empty device node dynamically. + * @fmt: Format string (plus vargs) for new full name of the device node + * + * Create an device tree node, either by by allocating an empty one
Create a device tree node by allocating an empty one
+ * suitable for further modification. The node data are dynamically + * allocated and all the node flags have the OF_DYNAMIC & OF_DETACHED + * bits set. Returns the newly allocated node or NULL on out of memory + * error. + */ +struct device_node *of_node_alloc(const char *fmt, ...)
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