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Commit a3499e9b authored by Sudip Mukherjee's avatar Sudip Mukherjee Committed by Stephen Boyd
Browse files

devm: add helper devm_add_action_or_reset() 



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: default avatarSudip Mukherjee <sudip@vectorindia.org>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarStephen Boyd <sboyd@codeaurora.org>
parent bb473593

include/linux/device.h

+12 −0
Original line number Diff line number Diff line
@@ -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