Re: [PATCH] serial: core: Fix probing serial_base_bus devices

[Marek Szyprowski]

On 01.06.2023 16:21, Greg Kroah-Hartman wrote:
> On Thu, Jun 01, 2023 at 05:14:44PM +0300, Tony Lindgren wrote:
>> If a physical serial port device driver uses arch_initcall() we fail to
>> probe the serial_base_bus devices and the serial port tx fails. This is
>> because as serial_base_bus uses module_initcall().
>>
>> Let's fix the issue by changing serial_base_bus to use arch_initcall().
> This will only work if the linking order is such that this will always
> come before the drivers.  Is that the case here?

Yes, serial_base_bus is linked as a second object, just after the 
serial_core. Device drivers come later.


Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland