https://bugs.freedesktop.org/show_bug.cgi?id=96423

Bug ID: 96423 Summary: radeonfb: BAR 0: can't reserve [mem 0x98000000-0x9fffffff pref] Product: DRI Version: XOrg git Hardware: PowerPC OS: All Status: NEW Severity: normal Priority: medium Component: DRM/Radeon Assignee: dri-devel@lists.freedesktop.org Reporter: mathieu.malaterre@gmail.com

On a PowerPC machine, when Open Firmware Frame Buffer is used (OFfb), I cannot `modprobe radeonfb` (but I can load `radeon`). It currently fails with:

[ 96.551486] radeonfb 0000:00:10.0: enabling device (0006 -> 0007) [ 96.551526] radeonfb 0000:00:10.0: BAR 0: can't reserve [mem 0x98000000-0x9fffffff pref] [ 96.551531] radeonfb (0000:00:10.0): cannot request region 0. [ 96.551545] radeonfb: probe of 0000:00:10.0 failed with error -16

It seems (to me) that it should be possible to add something like this to `radeonfb`:

https://github.com/torvalds/linux/blob/master/drivers/gpu/drm/radeon/radeon_...

[...] /* Get rid of things like offb */ ret = radeon_kick_out_firmware_fb(pdev); if (ret) [...]