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mailbox: qcom-ipcc: Fix IPCC mbox channel exhaustion

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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: fa74a0257f ("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>
This commit is contained in:
Sibi Sankar 2021-06-16 23:12:58 +05:30 committed by Greg Kroah-Hartman
parent 2a7c96c2e2
commit b9c3b48559
1 changed files with 6 additions and 0 deletions
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6
drivers/mailbox/qcom-ipcc.c
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@ -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)