Hi Lijun,
Make the prep build first to have .config in BUILD/<kernel>/<linux> (let's say
config.org)
Then, add CONFIG_USB_DWC3=m in config-centos-sig, run rpmbuild again. The error will occur as you said.
Compare error item CONFIG_USB_DWC3_ULPI to config.org.
If CONFIG_USB_DWC3_ULPI does not exist, add "#CONFIG_USB_DWC3_ULPI is not set" to config-centos-sig
If CONFIG_USB_DWC3_ULPI=m, add "CONFIG_USB_DWC3_ULPI=m" to config-centos-sig
If CONFIG_USB_DWC3_ULPI=y, add "CONFIG_USB_DWC3_ULPI=y" to config-centos-sig
Do the same to the others.
Best regards,
Chuong.