Hi Jiang, Build failed with "Device Drivers/DMA Engine Support/Async_tx: Offload support for the async_tx api" enabled because of undefined symbol. Patch 5/7 needs a fix? (snip) CHK include/linux/version.h CHK include/generated/utsrelease.h CALL scripts/checksyscalls.sh CHK include/generated/compile.h CHK include/linux/version.h make[2]: Nothing to be done for `all'. Building modules, stage 2. TEST posttest MODPOST 2201 modules Succeed: decoded and checked 1356146 instructions TEST posttest Success: decoded and checked 1000000 random instructions with 0 errors (seed:0x9432fb9e) Kernel: arch/x86/boot/bzImage is ready (#13) ERROR: "dmaengine_chan_ref_count" [crypto/async_tx/async_xor.ko] undefined! ERROR: "dmaengine_chan_ref_count" [crypto/async_tx/async_raid6_recov.ko] undefined! ERROR: "dmaengine_chan_ref_count" [crypto/async_tx/async_pq.ko] undefined! ERROR: "dmaengine_chan_ref_count" [crypto/async_tx/async_memcpy.ko] undefined! make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2 Best regards, Taku Izumi <izumi.taku@xxxxxxxxxxxxxx> -- 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