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Therefore, enable this to be mutable. > > Added tx_poll_period field while inserting the module to set the > poll period for ack after sending mailbox message. > > Signed-off-by: Ben Levinsky > --- > v2: Made param a module_param_named mutable arg as opposed to compiled option > --- > drivers/mailbox/zynqmp-ipi-mailbox.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c > index 4acf5612487c..521d08b9ab47 100644 > --- a/drivers/mailbox/zynqmp-ipi-mailbox.c > +++ b/drivers/mailbox/zynqmp-ipi-mailbox.c > @@ -64,6 +64,13 @@ > > #define MAX_SGI 16 > > +/* > + * Module parameters > + */ > +static int tx_poll_period = 5; > +module_param_named(tx_poll_period, tx_poll_period, int, 0644); > +MODULE_PARM_DESC(tx_poll_period, "Poll period waiting for ack after send."); > + > /** > * struct zynqmp_ipi_mchan - Description of a Xilinx ZynqMP IPI mailbox channel > * @is_opened: indicate if the IPI channel is opened > @@ -537,7 +544,7 @@ static int zynqmp_ipi_mbox_probe(struct zynqmp_ipi_mbox *ipi_mbox, > mbox->num_chans = 2; > mbox->txdone_irq = false; > mbox->txdone_poll = true; > - mbox->txpoll_period = 5; > + mbox->txpoll_period = tx_poll_period; > mbox->of_xlate = zynqmp_ipi_of_xlate; > chans = devm_kzalloc(mdev, 2 * sizeof(*chans), GFP_KERNEL); > if (!chans) Acked-by: Michal Simek Thanks, Michal