From: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx>
This patch allows chaining additional channels to a SMD device, enabling
implementation of multi-channel SMD devies - like Bluetooth.
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx>
Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
---
Changes since v2:
- None
Changes since v1:
- New patch
drivers/soc/qcom/smd.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/soc/qcom/smd.c b/drivers/soc/qcom/smd.c
index d253e5cc233f..c3fa0fd724f7 100644
--- a/drivers/soc/qcom/smd.c
+++ b/drivers/soc/qcom/smd.c
@@ -193,6 +193,7 @@ struct qcom_smd_channel {
int pkt_size;
struct list_head list;
+ struct list_head dev_list;
};
/**
@@ -887,6 +888,8 @@ static int qcom_smd_dev_remove(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;
+ struct qcom_smd_channel *tmp;
+ struct qcom_smd_channel *ch;
qcom_smd_channel_set_state(channel, SMD_CHANNEL_CLOSING);
@@ -906,10 +909,14 @@ static int qcom_smd_dev_remove(struct device *dev)
qsdrv->remove(qsdev);
/*
- * The client is now gone, cleanup and reset the channel state.
+ * The client is now gone, close and release all channels associated
+ * with this sdev
*/
- channel->qsdev = NULL;
- qcom_smd_channel_close(channel);
+ list_for_each_entry_safe(ch, tmp, &channel->dev_list, dev_list) {
+ qcom_smd_channel_close(ch);
+ list_del(&ch->dev_list);
+ ch->qsdev = NULL;
+ }
return 0;
}
@@ -1056,6 +1063,7 @@ static struct qcom_smd_channel *qcom_smd_create_channel(struct qcom_smd_edge *ed
if (!channel)
return ERR_PTR(-ENOMEM);
+ INIT_LIST_HEAD(&channel->dev_list);
channel->edge = edge;
channel->name = devm_kstrdup(smd->dev, name, GFP_KERNEL);
if (!channel->name)
--
2.5.0
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