i follow your advice , and the log as below. then there is no source code folder.
build_b4860qds-64b_release]$ bitbake ipc-ust -c patch -f
WARNING: Host distribution "CentOS-7.2.1511" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
Loading cache: 100% |######################################| ETA: 00:00:00
Loaded 3921 entries from dependency cache.
NOTE: Resolving any missing task queue dependencies
Build Configuration:
BB_VERSION = "1.22.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "CentOS-7.2.1511"
TARGET_SYS = "powerpc64-fsl-linux"
MACHINE = "b4860qds-64b"
DISTRO = "fsl-networking"
DISTRO_VERSION = "1.6"
TUNE_FEATURES = "m64 fpu-hard e6500 altivec"
TARGET_FPU = "hard"
meta
meta-yocto
meta-yocto-bsp = "(detachedfromfsl-sdk-v1.6):0d2ce44c2b0f8cc9699e30cca2c24655be89d58b"
meta-fsl-ppc = "(detachedfromfsl-sdk-v1.6):6cf59d9de63a9fc5f8942c0d10c622898f4315ce"
meta-fsl-ppc-toolchain = "(detachedfromfsl-sdk-v1.6):a546e42f86e7d57de19e27907365d170b13fc18f"
meta-fsl-networking
meta-fsl-networking = "(detachedfrom8dec9c6):8dec9c690188cce5305ef5055f91e5cfa35c63f4"
meta-virtualization
meta-virtualization = "(detachedfromfsl-sdk-v1.6):8044073f63a0d99541a43ac5f2f6d789f94c7c7c"
meta-oe
meta-networking
meta-webserver
meta-ruby
meta-filesystems = "(detachedfromfsl-sdk-v1.6):b86007f742a1b829ccc8d76e485bb3f789cefaa4"
meta-java = "(detachedfromfsl-sdk-v1.6):d01f7d39e513790ddce20e6724723722119a3700"
meta-openstack
meta-openstack-compute-deploy
meta-openstack-controller-deploy
meta-openstack-qemu = "(detachedfromfsl-sdk-v1.6):f627404399a134672e0b5e26a0d9b794a6f8adf4"
NOTE: Preparing runqueue
NOTE: Tainting hash to force rebuild of task /sdb/marklyu/QorIQ-SDK-V1.6-20140619-yocto/meta-fsl-ppc/recipes-bsp/ipc/ipc-ust_git.bb, do_patch
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
NOTE: Tasks Summary: Attempted 10 tasks of which 9 didn't need to be rerun and all succeeded.
Summary: There was 1 WARNING message shown.