ACK: [RESEND][PATCH 0/1][SRU][H][I] GPIO error logs in start and dmesg after update of kernel

[Tim Gardner]

Acked-by: Tim Gardner <tim.gardner at canonical.com>

On 8/24/21 1:26 AM, AceLan Kao wrote:
> From: "Chia-Lin Kao (AceLan)" <acelan.kao at canonical.com>
> 
> BugLink: https://bugs.launchpad.net/bugs/1937897
> 
> [Impact]
> After upgrade kernel to 5.11.0-25 which introduce some ODM patches from AAEON, user encounters below errors
> [ 5.852182] gpio gpiochip2: (gpio_aaeon): tried to insert a GPIO chip with zero lines
> [ 5.852187] gpiochip_add_data_with_key: GPIOs 0..-1 (gpio_aaeon) failed to register, -22
> [ 5.852194] gpio-aaeon: probe of gpio-aaeon.0 failed with error -22
> 
> [Fix]
> AAEON provides a patch to check the BFPI version before loading the driver.
> Which fixes the issue introduced by
> Hirsute:
>     45a8bb8699cc UBUNTU: ODM: mfd: Add support for IO functions of AAEON devices
> Impish:
>     424945128781 UBUNTU: ODM: mfd: Add support for IO functions of AAEON devices
> 
> [Test]
> Verified by AAEON.
> 
> [Where problems could occur]
> It adds a check while probing the driver, should have no impact to normal user.
> 
> Kunyang_Fan (1):
>    UBUNTU: ODM: mfd: Check AAEON BFPI version before adding device
> 
>   drivers/mfd/mfd-aaeon.c | 22 ++++++++++++++++++++++
>   1 file changed, 22 insertions(+)
> 

-- 
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Tim Gardner
Canonical, Inc