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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.

Change-Id: I70562e95e0ef672db7dc9bd9f24d9a3b356bf89c
(cherry picked from commit a3499e9bf0fe ("devm: add helper
devm_add_action_or_reset()")
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Taniya Das <tdas@codeaurora.org>

Signed-off-by: Kyle Yan <kyan@codeaurora.org>
This commit is contained in:
Sudip Mukherjee 2015-12-23 17:57:19 +05:30 • committed by Kyle Yan
parent d1a6faf956
commit 7546cb41d8
1 changed files with 12 additions and 0 deletions
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12
include/linux/device.h
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@ -681,6 +681,18 @@ void __iomem *devm_ioremap_resource(struct device *dev, struct resource *res);
int devm_add_action(struct device *dev, void (*action)(void *), void *data); int devm_add_action(struct device *dev, void (*action)(void *), void *data);
void devm_remove_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 { struct device_dma_parameters {
/* /*
* a low level driver may set these to teach IOMMU code about * a low level driver may set these to teach IOMMU code about