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Commit 3fd3f2fd authored by Bjorn Andersson's avatar Bjorn Andersson Committed by Andy Gross
Browse files

soc: qcom: smd: Refactor channel open and close handling 



Refactor opening and closing of channels into two separate functions
instead of open coding this in the various places.

Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: default avatarAndy Gross <andy.gross@linaro.org>
parent 995b170a

drivers/soc/qcom/smd.c

+40 −22
Original line number Diff line number Diff line
@@ -808,18 +808,12 @@ static int qcom_smd_dev_match(struct device *dev, struct device_driver *drv) 
}



/*

 * Probe the smd client.

 *

 * The remote side have indicated that it want the channel to be opened, so

 * complete the state handshake and probe our client driver.

 * Helper for opening a channel

 */

static int qcom_smd_dev_probe(struct device *dev)

static int qcom_smd_channel_open(struct qcom_smd_channel *channel,

				 qcom_smd_cb_t cb)

{

	struct qcom_smd_device *qsdev = to_smd_device(dev);

	struct qcom_smd_driver *qsdrv = to_smd_driver(dev);

	struct qcom_smd_channel *channel = qsdev->channel;

	size_t bb_size;

	int ret;



	/*

	 * Packets are maximum 4k, but reduce if the fifo is smaller
@@ -829,11 +823,44 @@ static int qcom_smd_dev_probe(struct device *dev) 
	if (!channel->bounce_buffer)

		return -ENOMEM;



	qcom_smd_channel_set_callback(channel, qsdrv->callback);

	qcom_smd_channel_set_callback(channel, cb);

	qcom_smd_channel_set_state(channel, SMD_CHANNEL_OPENING);



	qcom_smd_channel_set_state(channel, SMD_CHANNEL_OPENED);



	return 0;

}



/*

 * Helper for closing and resetting a channel

 */

static void qcom_smd_channel_close(struct qcom_smd_channel *channel)

{

	qcom_smd_channel_set_callback(channel, NULL);



	kfree(channel->bounce_buffer);

	channel->bounce_buffer = NULL;



	qcom_smd_channel_set_state(channel, SMD_CHANNEL_CLOSED);

	qcom_smd_channel_reset(channel);

}



/*

 * Probe the smd client.

 *

 * The remote side have indicated that it want the channel to be opened, so

 * complete the state handshake and probe our client driver.

 */

static int qcom_smd_dev_probe(struct device *dev)

{

	struct qcom_smd_device *qsdev = to_smd_device(dev);

	struct qcom_smd_driver *qsdrv = to_smd_driver(dev);

	struct qcom_smd_channel *channel = qsdev->channel;

	int ret;



	ret = qcom_smd_channel_open(channel, qsdrv->callback);

	if (ret)

		return ret;



	ret = qsdrv->probe(qsdev);

	if (ret)

		goto err;
@@ -845,11 +872,7 @@ static int qcom_smd_dev_probe(struct device *dev) 
err:

	dev_err(&qsdev->dev, "probe failed\n");



	qcom_smd_channel_set_callback(channel, NULL);

	kfree(channel->bounce_buffer);

	channel->bounce_buffer = NULL;



	qcom_smd_channel_set_state(channel, SMD_CHANNEL_CLOSED);

	qcom_smd_channel_close(channel);

	return ret;

}
@@ -886,12 +909,7 @@ static int qcom_smd_dev_remove(struct device *dev) 
	 * The client is now gone, cleanup and reset the channel state.

	 */

	channel->qsdev = NULL;

	kfree(channel->bounce_buffer);

	channel->bounce_buffer = NULL;



	qcom_smd_channel_set_state(channel, SMD_CHANNEL_CLOSED);



	qcom_smd_channel_reset(channel);

	qcom_smd_channel_close(channel);



	return 0;

}