On Wed 16 Jun 12:42 CDT 2021, Sibi Sankar wrote:
> 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
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Regards,
Bjorn
> ---
> 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)
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
