Fix IPCC (Inter-Processor Communication Controller) channel exhaustion by
setting the channel private data to NULL on mbox shutdown.
Err Logs:
remoteproc: MBA booted without debug policy, loading mpss
remoteproc: glink-edge: failed to acquire IPC channel
remoteproc: failed to probe subdevices for remoteproc: -16
Fixes: fa74a0257f45 ("mailbox: Add support for Qualcomm IPCC")
Signed-off-by: Sibi Sankar <sibis@xxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
drivers/mailbox/qcom-ipcc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/mailbox/qcom-ipcc.c b/drivers/mailbox/qcom-ipcc.c
index 2d13c72944c6..584700cd1585 100644
--- a/drivers/mailbox/qcom-ipcc.c
+++ b/drivers/mailbox/qcom-ipcc.c
@@ -155,6 +155,11 @@ static int qcom_ipcc_mbox_send_data(struct mbox_chan *chan, void *data)
return 0;
}
+static void qcom_ipcc_mbox_shutdown(struct mbox_chan *chan)
+{
+ chan->con_priv = NULL;
+}
+
static struct mbox_chan *qcom_ipcc_mbox_xlate(struct mbox_controller *mbox,
const struct of_phandle_args *ph)
{
@@ -184,6 +189,7 @@ static struct mbox_chan *qcom_ipcc_mbox_xlate(struct mbox_controller *mbox,
static const struct mbox_chan_ops ipcc_mbox_chan_ops = {
.send_data = qcom_ipcc_mbox_send_data,
+ .shutdown = qcom_ipcc_mbox_shutdown,
};
static int qcom_ipcc_setup_mbox(struct qcom_ipcc *ipcc)
--
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