Re: [PATCH] spi: remove return value check of debugfs_create_dir()

[Peter Enderborg <Peter.Enderborg@xxxxxxxx>]

On 4/24/23 14:53, Greg Kroah-Hartman wrote:
>
>>> We can do things with the debug information without filesystem enabled.
> What exactly do you mean by this?
>
>
We can read out data from kernel with a ramdumper and analyse with crash.

See https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/kernel_administration_guide/kernel_crash_dump_guide

If it is useful or not I can not say, but the dws->regset. is lost and can not be read with a post mortem debugger.


> thanks,
>
> greg k-h