From 3fd3f2fd86478614fecbe261b201779b4fc6abd2 Mon Sep 17 00:00:00 2001 From: Bjorn Andersson Date: Wed, 17 Feb 2016 22:39:04 -0800 Subject: [PATCH] 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: Bjorn Andersson Signed-off-by: Bjorn Andersson Signed-off-by: Andy Gross --- drivers/soc/qcom/smd.c | 62 ++++++++++++++++++++++++++++++++------------------ 1 file changed, 40 insertions(+), 22 deletions(-) diff --git a/drivers/soc/qcom/smd.c b/drivers/soc/qcom/smd.c index e8972dd..d253e5c 100644 --- a/drivers/soc/qcom/smd.c +++ b/drivers/soc/qcom/smd.c @@ -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; } -- 2.7.4