From: Sibi Sankar Date: Wed, 16 Jun 2021 17:42:58 +0000 (+0530) Subject: mailbox: qcom-ipcc: Fix IPCC mbox channel exhaustion X-Git-Tag: v5.10.79~2777 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=b9c3b485593e07ed217cb6970d6c651558e4afb1;p=platform%2Fkernel%2Flinux-rpi.git mailbox: qcom-ipcc: Fix IPCC mbox channel exhaustion 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 Cc: stable@vger.kernel.org Reviewed-by: Bjorn Andersson Reviewed-by: Manivannan Sadhasivam Signed-off-by: Jassi Brar Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/mailbox/qcom-ipcc.c b/drivers/mailbox/qcom-ipcc.c index 2d13c72..584700c 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)