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To avoid patching this when modifying the value, the > value is now set with default that can be overwritten from kconfig > prompt. > > Signed-off-by: Ben Levinsky > --- > drivers/mailbox/Kconfig | 12 ++++++++++++ > drivers/mailbox/zynqmp-ipi-mailbox.c | 9 ++++++++- > 2 files changed, 20 insertions(+), 1 deletion(-) > > diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig > index 3b8842c4a340..c87a92400616 100644 > --- a/drivers/mailbox/Kconfig > +++ b/drivers/mailbox/Kconfig > @@ -259,6 +259,18 @@ config ZYNQMP_IPI_MBOX > message to the IPI buffer and will access the IPI control > registers to kick the other processor or enquire status. > > +config ZYNQMP_IPI_MBOX_POLL_PERIOD > + int > + prompt "ZynqMP IPI Mailbox driver polling period" > + default 5 > + depends on ZYNQMP_IPI_MBOX > + help > + By default the Xilinx-AMD IPI mailbox driver has a polling period > + of five milliseconds. If this option is set then the provided value > + will be used. > + > + Leave as default if not sure. > + > config SUN6I_MSGBOX > tristate "Allwinner sun6i/sun8i/sun9i/sun50i Message Box" > depends on ARCH_SUNXI || COMPILE_TEST > diff --git a/drivers/mailbox/zynqmp-ipi-mailbox.c b/drivers/mailbox/zynqmp-ipi-mailbox.c > index 4acf5612487c..df540e2b9dbe 100644 > --- a/drivers/mailbox/zynqmp-ipi-mailbox.c > +++ b/drivers/mailbox/zynqmp-ipi-mailbox.c > @@ -64,6 +64,13 @@ > > #define MAX_SGI 16 > > +/* Polling period in milliseconds. */ > +#ifndef CONFIG_ZYNQMP_IPI_MBOX_POLL_PERIOD > +#define ZYNQMP_IPI_MBOX_POLL_PERIOD (5U) > +#else > +#define ZYNQMP_IPI_MBOX_POLL_PERIOD CONFIG_ZYNQMP_IPI_MBOX_POLL_PERIOD > +#endif > + I think it would be better if this is module parameter that you don't need to recompile the kernel all the time when you want to change this value. Thanks, Michal