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authorPantelis Antoniou <pantelis.antoniou@konsulko.com>2015-01-21 19:06:14 +0200
committerRob Herring <robh@kernel.org>2017-06-27 12:36:40 -0500
commitce4fecf1fe1518131ff80eebf412de0080fea049 (patch)
treece6ebedb494bf08a0375050fe4077f2e1dbcb71c /drivers/of/unittest-data
parent27497e11b56a072dfd80e9f1f229049b2921a1a6 (diff)
downloadlinux-ce4fecf1fe1518131ff80eebf412de0080fea049.tar.bz2
vsprintf: Add %p extension "%pOF" for device tree
90% of the usage of device node's full_name is printing it out in a kernel message. However, storing the full path for every node is wasteful and redundant. With a custom format specifier, we can generate the full path at run-time and eventually remove the full path from every node. For instance typical use is: pr_info("Frobbing node %s\n", node->full_name); Which can be written now as: pr_info("Frobbing node %pOF\n", node); '%pO' is the base specifier to represent kobjects with '%pOF' representing struct device_node. Currently, struct device_node is the only supported type of kobject. More fine-grained control of formatting includes printing the name, flags, path-spec name and others, explained in the documentation entry. Originally written by Pantelis, but pretty much rewrote the core function using existing string/number functions. The 2 passes were unnecessary and have been removed. Also, updated the checkpatch.pl check. The unittest code was written by Grant Likely. Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com> Acked-by: Joe Perches <joe@perches.com> Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'drivers/of/unittest-data')
-rw-r--r--drivers/of/unittest-data/tests-platform.dtsi4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/of/unittest-data/tests-platform.dtsi b/drivers/of/unittest-data/tests-platform.dtsi
index eb20eeb2b062..a0c93822aee3 100644
--- a/drivers/of/unittest-data/tests-platform.dtsi
+++ b/drivers/of/unittest-data/tests-platform.dtsi
@@ -26,7 +26,9 @@
#size-cells = <0>;
dev@100 {
- compatible = "test-sub-device";
+ compatible = "test-sub-device",
+ "test-compat2",
+ "test-compat3";
reg = <0x100>;
};
};