Re: [PATCH] remoteproc: xlnx: do not send new mailbox notification

["Shah, Tanmay" <tanmays@amd.com>]

Hi Mathieu,

On 2/19/2026 4:43 PM, Tanmay Shah wrote:
> Only write a new message to the tx mbox queue if slot is available in
> the tx queue. If queue is full, then do not send new mbox notification.
> 
> Signed-off-by: Tanmay Shah <tanmay.shah@amd.com>
> ---
> 
> Depends on: https://lore.kernel.org/linux-remoteproc/20260209234430.512492-1-jassisinghbrar@gmail.com/T/#u
> 

This dependency is now merged in the linux-next branch.

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/mailbox?id=57df858a46f0a4cc104716e0ec88864e5c386ca4

I don't know what's the process, but can we merge this patch and
dependency both in the for-next branch?

Thanks,
Tanmay

>  drivers/remoteproc/xlnx_r5_remoteproc.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/remoteproc/xlnx_r5_remoteproc.c b/drivers/remoteproc/xlnx_r5_remoteproc.c
> index bd619a6c42aa..622de733c929 100644
> --- a/drivers/remoteproc/xlnx_r5_remoteproc.c
> +++ b/drivers/remoteproc/xlnx_r5_remoteproc.c
> @@ -332,7 +332,10 @@ 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;
> +
> +	if (mbox_chan_tx_slots_available(ipi->tx_chan) == 0)
>  		return;
>  
>  	mb_msg = (struct zynqmp_ipi_message *)ipi->tx_mc_buf;
> 
> base-commit: 462799c088e71b2b8a511c2a9649420fcb569ab7