Re: [PATCH RESEND v2 0/2] driver core: bus: Fix issues related to bus_rescan_devices_helper()

[Greg Kroah-Hartman]

On Tue, Oct 22, 2024 at 07:18:00PM +0800, Zijun Hu wrote:
> This patch series is to fix issues related to bus_rescan_devices_helper().
> 
> The function is improperly used for 2 incompatible scenarios as
> explained below:
> 
> Scenario A: scan drivers for a single device user specify
>  - user may care about precise synchronous scanning result, so the
>    function can not collapse error codes.

I do not understand this, what is wrong that this is fixing?

> Scenario B: scan drivers for all devices of a bus
>  - user may need to scan drivers for a bus's devices as many as
>    possible, so the function needs to ignore inconsequential error
>    codes for a device in order to continue to scan for next device.

How often is that needed?  And why can't that still work with the
existing code?

thanks,

greg k-h