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| author | William Breathitt Gray <wbg@kernel.org> | 2025-10-20 17:51:45 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-29 14:08:56 +0100 |
| commit | 4c71f1c293cfbc84fb410c2798787519e4028433 (patch) | |
| tree | 952d98897cc3559b10e05fb8ffb5223be78c96bd /drivers/gpio | |
| parent | b1c2b4e6ffd307720ab6ce42f6749b0c02ba0a73 (diff) | |
| download | linux-4c71f1c293cfbc84fb410c2798787519e4028433.tar.gz linux-4c71f1c293cfbc84fb410c2798787519e4028433.tar.bz2 linux-4c71f1c293cfbc84fb410c2798787519e4028433.zip | |
gpio: pci-idio-16: Define maximum valid register address offset
commit d37623132a6347b4ab9e2179eb3f2fa77863c364 upstream.
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>
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-v2-2-ebeb50e93c33@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpio')
| -rw-r--r-- | drivers/gpio/gpio-pci-idio-16.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-pci-idio-16.c b/drivers/gpio/gpio-pci-idio-16.c index 44c0a21b1d1d..5827b18d190b 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, |