Messages in this thread Patch in this message | | | From | Ramon Fried <> | Subject | [PATCH] uio: make MAX_UIO_MAPS & MAX_UIO_PORT_REGIONS configurable | Date | Wed, 13 Apr 2022 10:11:37 +0300 |
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MAX_UIO_MAPS and MAX_UIO_PORT_REGIONS are hard-coded to 5. This is not always sufficiant for some drivers. Make the MAX_UIO_MAPS and MAX_UIO_PORT_REGIONS configurable by providing Kconfig int option with the defaut value of 5.
Signed-off-by: Ramon Fried <rfried.dev@gmail.com> --- drivers/uio/Kconfig | 14 ++++++++++++++ include/linux/uio_driver.h | 4 ++-- 2 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/uio/Kconfig b/drivers/uio/Kconfig index 2e16c5338e5b..bc1fe83cec13 100644 --- a/drivers/uio/Kconfig +++ b/drivers/uio/Kconfig @@ -13,6 +13,20 @@ menuconfig UIO if UIO +config UIO_MAX_MAPS + int "Maximum of memory nodes each uio device support(1-128)" + range 1 128 + default 5 + help + Maximum memory mapping each uio device can support. + +config UIO_MAX_PORT_REGIONS + int "Maximum of port regions each uio device support(1-128)" + range 1 128 + default 5 + help + Maximum port regions each uio device can support. + config UIO_CIF tristate "generic Hilscher CIF Card driver" depends on PCI diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h index 47c5962b876b..f7dc47347c71 100644 --- a/include/linux/uio_driver.h +++ b/include/linux/uio_driver.h @@ -44,7 +44,7 @@ struct uio_mem { struct uio_map *map; }; -#define MAX_UIO_MAPS 5 +#define MAX_UIO_MAPS CONFIG_UIO_MAX_MAPS struct uio_portio; @@ -64,7 +64,7 @@ struct uio_port { struct uio_portio *portio; }; -#define MAX_UIO_PORT_REGIONS 5 +#define MAX_UIO_PORT_REGIONS CONFIG_UIO_MAX_PORT_REGIONS struct uio_device { struct module *owner; -- 2.30.2
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