drivers/usb/gadget/net2280.c:2968: warning: ignoring return value of âpci_set_mwiâ, declared with attribute warn_unused_result
--
  CC [M]  drivers/usb/serial/usb-serial.o
  CC [M]  drivers/video/aty/mach64_ct.o
  CC [M]  drivers/video/aty/radeon_base.o
  CC [M]  drivers/usb/serial/generic.o
drivers/video/aty/radeon_base.c: In function âradeonfb_pci_registerâ:
drivers/video/aty/radeon_base.c:2321: warning: ignoring return value of âsysfs_create_bin_fileâ, declared with attribute warn_unused_result
drivers/video/aty/radeon_base.c:2323: warning: ignoring return value of âsysfs_create_bin_fileâ, declared with attribute warn_unused_result
--
*         >> Appending lvm2 cpio data...
*               LVM2: Adding support (using local static binaries)...
* Gentoo Linux Genkernel; Version 3.4.7
* Running with options: --kernel-config=/usr/src/config --xconfig --bootloader=grub --gensplash=sabayon --lvm2 all

* ERROR: Could not copy over lvm.conf!

* -- End log... --

* Please consult /var/log/genkernel.log for more information and any
* errors that were reported above.

* Report any genkernel bugs to bugs.gentoo.org and
* assign your bug to genkernel@gentoo.org. Please include
* as much information as you can in your bug report; attaching
* /var/log/genkernel.log so that your issue can be dealt with effectively.
*
* Please do *not* report compilation failures as genkernel bugs!
*