Attempting to load the pci-idio-16 module fails during regmap initialization with a return error -EINVAL. This is a result of the regmap cache failing initialization. Set the idio_16_regmap_config max_register member to fix this failure.
Fixes: 73d8f3efc5c2 ("gpio: pci-idio-16: Migrate to the regmap API") Reported-by: Mark Cave-Ayland mark.caveayland@nutanix.com Link: https://lore.kernel.org/r/9b0375fd-235f-4ee1-a7fa-daca296ef6bf@nutanix.com Suggested-by: Mark Cave-Ayland mark.caveayland@nutanix.com Cc: stable@vger.kernel.org Signed-off-by: William Breathitt Gray wbg@kernel.org --- drivers/gpio/gpio-pci-idio-16.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpio/gpio-pci-idio-16.c b/drivers/gpio/gpio-pci-idio-16.c index 476cea1b5ed774d18511aaf71d8ca2d71bcc9ff0..9d28ca8e1d6fac4bdc105b850583607b5e5a87ea 100644 --- a/drivers/gpio/gpio-pci-idio-16.c +++ b/drivers/gpio/gpio-pci-idio-16.c @@ -41,6 +41,7 @@ static const struct regmap_config idio_16_regmap_config = { .reg_stride = 1, .val_bits = 8, .io_port = true, + .max_register = 0x7, .wr_table = &idio_16_wr_table, .rd_table = &idio_16_rd_table, .volatile_table = &idio_16_rd_table,