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Groups > linux.kernel > #1297413

[PATCH 1/2] devm: add helper devm_add_action_or_reset()

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Add a helper function devm_add_action_or_reset() which will internally
call devm_add_action(). But if devm_add_action() fails then it will
execute the action mentioned and return the error code.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
---

Next patch of the series will use this helper. And from a first glance
more use of this helper will be there.

 include/linux/device.h | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/include/linux/device.h b/include/linux/device.h
index f627ba2..f2455d0 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -682,6 +682,18 @@ void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res);
 int devm_add_action(struct device *dev, void (*action)(void *), void *data);
 void devm_remove_action(struct device *dev, void (*action)(void *), void *data);
 
+static inline int devm_add_action_or_reset(struct device *dev,
+					   void (*action)(void *), void *data)
+{
+	int ret;
+
+	ret = devm_add_action(dev, action, data);
+	if (ret)
+		action(data);
+
+	return ret;
+}
+
 struct device_dma_parameters {
 	/*
 	 * a low level driver may set these to teach IOMMU code about
-- 
1.9.1

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[PATCH 1/2] devm: add helper devm_add_action_or_reset() Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2015-12-23 13:30 +0100
  [PATCH v2 2/2] clk: qcom: common: check for failure Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2015-12-23 13:30 +0100

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