Hi,
On 12-Sep-25 10:18 PM, Sébastien Szymanski wrote:
> Since commit 7c010d463372 ("gpiolib: acpi: Make sure we fill struct
> acpi_gpio_info"), uninitialized acpi_gpio_info struct are passed to
> __acpi_find_gpio() and later in the call stack info->quirks is used in
> acpi_populate_gpio_lookup. This breaks the i2c_hid_cpi driver:
>
> [ 58.122916] i2c_hid_acpi i2c-UNIW0001:00: HID over i2c has not been provided an Int IRQ
> [ 58.123097] i2c_hid_acpi i2c-UNIW0001:00: probe with driver i2c_hid_acpi failed with error -22
>
> Fix this by initializing the acpi_gpio_info pass to __acpi_find_gpio()
>
> Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220388
> Fixes: 7c010d463372 ("gpiolib: acpi: Make sure we fill struct acpi_gpio_info")
> Signed-off-by: Sébastien Szymanski <sebastien.szymanski@xxxxxxxxxxxx>
Thanks, I hit and debugged the same problem myself:
https://lore.kernel.org/linux-acpi/20250912221859.368173-1-hansg@xxxxxxxxxx/
But your patch is better since I only fixed 1 of the 2 uninitialized
struct cases:
Tested-by: Hans de Goede <hansg@xxxxxxxxxx>
Reviewed-by: Hans de Goede <hansg@xxxxxxxxxx>
Andy, Mika this is a pretty serious regression in 6.17-rc# can you please
make sure to get this fix merged before 6.17 final.
Regards,
Hans
> ---
> drivers/gpio/gpiolib-acpi-core.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpio/gpiolib-acpi-core.c b/drivers/gpio/gpiolib-acpi-core.c
> index 12b24a717e43f17621c054bfc4e9c2e287236d8c..d11bcaf1ae88421e5e5a11a2ba94983f437c413a 100644
> --- a/drivers/gpio/gpiolib-acpi-core.c
> +++ b/drivers/gpio/gpiolib-acpi-core.c
> @@ -942,7 +942,7 @@ struct gpio_desc *acpi_find_gpio(struct fwnode_handle *fwnode,
> {
> struct acpi_device *adev = to_acpi_device_node(fwnode);
> bool can_fallback = acpi_can_fallback_to_crs(adev, con_id);
> - struct acpi_gpio_info info;
> + struct acpi_gpio_info info = {};
> struct gpio_desc *desc;
>
> desc = __acpi_find_gpio(fwnode, con_id, idx, can_fallback, &info);
> @@ -992,7 +992,7 @@ int acpi_dev_gpio_irq_wake_get_by(struct acpi_device *adev, const char *con_id,
> int ret;
>
> for (i = 0, idx = 0; idx <= index; i++) {
> - struct acpi_gpio_info info;
> + struct acpi_gpio_info info = {};
> struct gpio_desc *desc;
>
> /* Ignore -EPROBE_DEFER, it only matters if idx matches */
>
> ---
> base-commit: 76eeb9b8de9880ca38696b2fb56ac45ac0a25c6c
> change-id: 20250912-gpiolib-acpi-fix-7ee492ebd5e8
>
> Best regards,
