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Subject[PATCH V4 8/9] rpmsg: glink: unregister rpmsg device during endpoint destroy
Date
Rpmsg device unregister is not happening if channel close is triggered
from local side and causing re-registration of device failures.

Unregister rpmsg device for local close in endpoint destroy path.

Signed-off-by: Arun Kumar Neelakantam <aneela@codeaurora.org>
---
drivers/rpmsg/qcom_glink_native.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/drivers/rpmsg/qcom_glink_native.c b/drivers/rpmsg/qcom_glink_native.c
index 484b427..d849bc4 100644
--- a/drivers/rpmsg/qcom_glink_native.c
+++ b/drivers/rpmsg/qcom_glink_native.c
@@ -1184,6 +1184,7 @@ static void qcom_glink_destroy_ept(struct rpmsg_endpoint *ept)
{
struct glink_channel *channel = to_glink_channel(ept);
struct qcom_glink *glink = channel->glink;
+ struct rpmsg_channel_info chinfo;
unsigned long flags;

spin_lock_irqsave(&channel->recv_lock, flags);
@@ -1191,6 +1192,13 @@ static void qcom_glink_destroy_ept(struct rpmsg_endpoint *ept)
spin_unlock_irqrestore(&channel->recv_lock, flags);

/* Decouple the potential rpdev from the channel */
+ if (channel->rpdev) {
+ strncpy(chinfo.name, channel->name, sizeof(chinfo.name));
+ chinfo.src = RPMSG_ADDR_ANY;
+ chinfo.dst = RPMSG_ADDR_ANY;
+
+ rpmsg_unregister_device(glink->dev, &chinfo);
+ }
channel->rpdev = NULL;

qcom_glink_send_close_req(glink, channel);
@@ -1456,6 +1464,7 @@ static void qcom_glink_rx_close(struct qcom_glink *glink, unsigned int rcid)

rpmsg_unregister_device(glink->dev, &chinfo);
}
+ channel->rpdev = NULL;

qcom_glink_send_close_ack(glink, channel->rcid);

--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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