On Fri, Jan 10, 2014 at 1:41 AM, Guo Chao <yan@xxxxxxxxxxxxxxxxxx> wrote: > On Wed, Jan 08, 2014 at 03:34:54PM -0800, Yinghai Lu wrote: > Just FYI, a Mellanox net card failed after exactly this patch. > > 3.13-rc7 + bjorn's series is OK. After this patch applied, Mellanox > driver complains: > > |mlx4_core 0003:05:00.0: Multiple PFs not yet supported. Skipping PF. > |mlx4_core: probe of 0003:05:00.0 failed with error -22 > > This is caused by MMIO read from BAR 0 (64-bit non-prefetchable) returns > non-zore value. > > Resource assignment, as far as we can see, works fine. The noticable > effect of this patch is putting ROM BAR under non-prefetachable. I try > to revert this effect by adding MEM_64 to its ROM resource and it works > again (system does not expose 4G above aperture yet). Not sure what's > the root cause, looks like a driver/firmware/hardware defect. Interesting. Can you post boot log with "debug ignore_loglevel initcall_debug" and with/without this patch? Thanks Yinghai -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
