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remoteproc: Make start and stop in subdev optional

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Some subdevices, such as glink ssr only care about the stop operation,
so make the operations optional to reduce client code.

Tested-by: Fabien Dessenne <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
Signed-off-by Alex Elder <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
This commit is contained in:
Bjorn Andersson 2018-06-26 07:11:56 -05:00
commit be37b1e0fb
1 changed files with 13 additions and 7 deletions
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20
drivers/remoteproc/remoteproc_core.c
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@ -780,16 +780,20 @@ static int rproc_start_subdevices(struct rproc *rproc)
int ret;
list_for_each_entry(subdev, &rproc->subdevs, node) {
ret = subdev->start(subdev);
if (ret)
goto unroll_registration;
if (subdev->start) {
ret = subdev->start(subdev);
if (ret)
goto unroll_registration;
}
}
return 0;
unroll_registration:
list_for_each_entry_continue_reverse(subdev, &rproc->subdevs, node)
subdev->stop(subdev, true);
list_for_each_entry_continue_reverse(subdev, &rproc->subdevs, node) {
if (subdev->stop)
subdev->stop(subdev, true);
}
return ret;
}
@ -798,8 +802,10 @@ static void rproc_stop_subdevices(struct rproc *rproc, bool crashed)
{
struct rproc_subdev *subdev;
list_for_each_entry_reverse(subdev, &rproc->subdevs, node)
subdev->stop(subdev, crashed);
list_for_each_entry_reverse(subdev, &rproc->subdevs, node) {
if (subdev->stop)
subdev->stop(subdev, crashed);
}
}
/**