6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: William Breathitt Gray wbg@kernel.org
commit c4d35e635f3a65aec291a6045cae8c99cede5bba upstream.
Attempting to load the 104-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: 2c210c9a34a3 ("gpio: 104-idio-16: Migrate to the regmap API") Reported-by: Mark Cave-Ayland mark.caveayland@nutanix.com Closes: 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 Reviewed-by: Andy Shevchenko andriy.shevchenko@linux.intel.com Signed-off-by: William Breathitt Gray wbg@kernel.org Reviewed-by: Linus Walleij linus.walleij@linaro.org Link: https://lore.kernel.org/r/20251020-fix-gpio-idio-16-regmap-v2-1-ebeb50e93c33... Signed-off-by: Bartosz Golaszewski bartosz.golaszewski@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpio/gpio-104-idio-16.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpio/gpio-104-idio-16.c b/drivers/gpio/gpio-104-idio-16.c index ffe7e1cb6b23..fe5c10cd5c32 100644 --- a/drivers/gpio/gpio-104-idio-16.c +++ b/drivers/gpio/gpio-104-idio-16.c @@ -59,6 +59,7 @@ static const struct regmap_config idio_16_regmap_config = { .reg_stride = 1, .val_bits = 8, .io_port = true, + .max_register = 0x5, .wr_table = &idio_16_wr_table, .rd_table = &idio_16_rd_table, .volatile_table = &idio_16_rd_table,