From: Chris Lew clew@codeaurora.org
commit b646293e272816dd0719529dcebbd659de0722f7 upstream.
In a remote processor crash scenario, there is no guarantee the remote processor sent close requests before it went into a bad state. Remove the reference that is normally handled by the close command in the so channel resources can be released.
Fixes: b4f8e52b89f6 ("rpmsg: Introduce Qualcomm RPM glink driver") Cc: stable@vger.kernel.org Tested-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Signed-off-by: Chris Lew clew@codeaurora.org Reported-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org Signed-off-by: Bjorn Andersson bjorn.andersson@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/rpmsg/qcom_glink_native.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/drivers/rpmsg/qcom_glink_native.c +++ b/drivers/rpmsg/qcom_glink_native.c @@ -1644,6 +1644,10 @@ void qcom_glink_native_remove(struct qco idr_for_each_entry(&glink->lcids, channel, cid) kref_put(&channel->refcount, qcom_glink_channel_release);
+ /* Release any defunct local channels, waiting for close-req */ + idr_for_each_entry(&glink->rcids, channel, cid) + kref_put(&channel->refcount, qcom_glink_channel_release); + idr_destroy(&glink->lcids); idr_destroy(&glink->rcids); spin_unlock_irqrestore(&glink->idr_lock, flags);