From: Bjorn Andersson Date: Thu, 18 Feb 2016 06:39:05 +0000 (-0800) Subject: soc: qcom: smd: Support multiple channels per sdev X-Git-Tag: v4.7-rc1~133^2~23^2~1 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=d5933855c0eb0a4103cf5db784cfdd4d7a85cd56;p=linux.git soc: qcom: smd: Support multiple channels per sdev This patch allows chaining additional channels to a SMD device, enabling implementation of multi-channel SMD devies - like Bluetooth. Signed-off-by: Bjorn Andersson Signed-off-by: Bjorn Andersson Signed-off-by: Andy Gross --- 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)