| From d6fbfdbc12745ce24bcd348dbf7e652353b3e59c Mon Sep 17 00:00:00 2001 |
| From: Sibi Sankar <sibis@codeaurora.org> |
| Date: Wed, 16 Jun 2021 23:12:58 +0530 |
| Subject: mailbox: qcom-ipcc: Fix IPCC mbox channel exhaustion |
| |
| From: Sibi Sankar <sibis@codeaurora.org> |
| |
| commit d6fbfdbc12745ce24bcd348dbf7e652353b3e59c upstream. |
| |
| 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@codeaurora.org> |
| Cc: stable@vger.kernel.org |
| Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> |
| Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> |
| Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/mailbox/qcom-ipcc.c | 6 ++++++ |
| 1 file changed, 6 insertions(+) |
| |
| --- a/drivers/mailbox/qcom-ipcc.c |
| +++ b/drivers/mailbox/qcom-ipcc.c |
| @@ -155,6 +155,11 @@ static int qcom_ipcc_mbox_send_data(stru |
| 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_ |
| |
| 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) |
