# Re: \[PATCH v3\] x86: sysfb: remove sysfb when probing real hw

- From: Ingo Molnar \<mingo@kernel.org\>
- Date: 2013-12-19 19:19:57 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2013/12/4170845
- Thread: https://ratatoskr.run/linux-fbdev/2013/12/4169043/t.md

```text

* Stephen Warren [ref] wrote:

> On 12/19/2013 11:55 AM, Ingo Molnar wrote:
> > 
> > * Stephen Warren [ref] wrote:
> > 
> >> On 12/19/2013 03:13 AM, David Herrmann wrote:
> >>> With CONFIG_X86_SYSFB=y, probing real hw-drivers may result in
> >>> resource-conflicts and drivers will refuse to load. A call to
> >>> request_mem_region() will fail, if the region overlaps with the mem-region
> >>> used by simplefb. The common desktop DRM drivers (intel, nouveau, radeon)
> >>> are not affected as they don't reserve their resources, but some others
> >>> do, including (nvidiafb, cirrus, ..).
> >>
> >> I have validated that this doesn't cause any regressions on the/a
> >> non-x86 platform using simplefb, although given the main point of this
> >> patch is to fix issues on x86, I'm rather hesitant to give a tested-by
> >> tag in case someone looking back interprets it incorrectly:-)
> > 
> > Tested-on-ARM-by: Stephen Warren [ref]
> 
> I suppose with CC: stable there's some precedent for a comment after the
> tag, so perhaps:
> 
> Tested-by: Stephen Warren <redacted> # on ARM only

That works too.

Thanks,

	Ingo
```