Commit d3762313 authored by William Breathitt Gray's avatar William Breathitt Gray Committed by Bartosz Golaszewski
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gpio: pci-idio-16: Define maximum valid register address offset 



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: 73d8f3ef ("gpio: pci-idio-16: Migrate to the regmap API")
Reported-by: default avatarMark Cave-Ayland <mark.caveayland@nutanix.com>
Closes: https://lore.kernel.org/r/9b0375fd-235f-4ee1-a7fa-daca296ef6bf@nutanix.com


Suggested-by: default avatarMark Cave-Ayland <mark.caveayland@nutanix.com>
Cc: stable@vger.kernel.org
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarWilliam Breathitt Gray <wbg@kernel.org>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20251020-fix-gpio-idio-16-regmap-v2-2-ebeb50e93c33@kernel.org


Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent c4d35e63

drivers/gpio/gpio-pci-idio-16.c

+1 −0
Original line number Diff line number Diff line
@@ -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,