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Message-ID: <20260203225821.3293475-4-tanmay.shah@amd.com> Date: Tue, 3 Feb 2026 14:58:22 -0800 From: Tanmay Shah <tanmay.shah@....com> To: <jassisinghbrar@...il.com>, <andersson@...nel.org>, <mathieu.poirier@...aro.org> CC: <linux-kernel@...r.kernel.org>, <linux-remoteproc@...r.kernel.org>, Tanmay Shah <tanmay.shah@....com> Subject: [PATCH v4 3/3] remoteproc: xlnx: do not send new mbox notification 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 <tanmay.shah@....com> --- 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
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