Only write new message to the tx mbox queue if slot is available. If queue is full, then do not send new mbox notification.
Signed-off-by: Tanmay Shah <[email protected]> --- drivers/remoteproc/xlnx_r5_remoteproc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/xlnx_r5_remoteproc.c b/drivers/remoteproc/xlnx_r5_remoteproc.c index 109831c5815c..46c20b603bc7 100644 --- a/drivers/remoteproc/xlnx_r5_remoteproc.c +++ b/drivers/remoteproc/xlnx_r5_remoteproc.c @@ -9,6 +9,7 @@ #include <linux/firmware/xlnx-zynqmp.h> #include <linux/kernel.h> #include <linux/mailbox_client.h> +#include <linux/mailbox_controller.h> #include <linux/mailbox/zynqmp-ipi-message.h> #include <linux/module.h> #include <linux/of_address.h> @@ -341,7 +342,11 @@ static void zynqmp_r5_rproc_kick(struct rproc *rproc, int vqid) int ret; ipi = r5_core->ipi; - if (!ipi) + if (!ipi || !ipi->tx_chan) + return; + + /* Do not need new kick as already many kicks are pending. */ + if (ipi->tx_chan->cl->tx_slots_avail_ro == 0) return; mb_msg = (struct zynqmp_ipi_message *)ipi->tx_mc_buf; -- 2.34.1
