remoteproc: Introducing function rproc_validate() (88d3a136) · Commits · 戴 / test

drivers/remoteproc/remoteproc_core.c

+41 −0

Original line number	Diff line number	Diff line
		@@ -2043,6 +2043,43 @@ struct rproc *rproc_get_by_phandle(phandle phandle)
		#endif
		EXPORT_SYMBOL(rproc_get_by_phandle);

		static int rproc_validate(struct rproc *rproc)
		{
		switch (rproc->state) {
		case RPROC_OFFLINE:
		/*
		* An offline processor without a start()
		* function makes no sense.
		*/
		if (!rproc->ops->start)
		return -EINVAL;
		break;
		case RPROC_DETACHED:
		/*
		* A remote processor in a detached state without an
		* attach() function makes not sense.
		*/
		if (!rproc->ops->attach)
		return -EINVAL;
		/*
		* When attaching to a remote processor the device memory
		* is already available and as such there is no need to have a
		* cached table.
		*/
		if (rproc->cached_table)
		return -EINVAL;
		break;
		default:
		/*
		* When adding a remote processor, the state of the device
		* can be offline or detached, nothing else.
		*/
		return -EINVAL;
		}

		return 0;
		}

		/**
		* rproc_add() - register a remote processor
		* @rproc: the remote processor handle to register
		@@ -2072,6 +2109,10 @@ int rproc_add(struct rproc *rproc)
		if (ret < 0)
		return ret;

		ret = rproc_validate(rproc);
		if (ret < 0)
		return ret;

		dev_info(dev, "%s is available\n", rproc->name);

		/* create debugfs entries */