1.概述

前面介绍了驱动搭建方法，

这里主要是排查通路的正确性

2. 内核崩溃

直接运行应用程序试试，发现直接内核崩了

debug  : ionAlloc [   35.243468] Unable to handle kernel NULL pointer dereference at virtual address 00000008
<__GetIonMemOpsS:925>: *** get _[   35.255242] pgd = dfeac000
_GetIonMemOpsS ***
debug  : ion[   35.261030] [00000008] *pgd=60354835Alloc <ion_alloc_open:134>: begi, *pte=00000000n ion_alloc_opendebug  : ce, *ppte=00000000darc <VeSetSpeed:1552>: *** set
ve freq to 600 Mhz ***
debug  :[   35.279154] Internal error: Oops - BUG: 17 [#1] PREEMPT SMP ARMionAlloc <ion_alloc_open:175>: [   35.288507] Modules linked in: sunxi_usbc** phy offset = 0
prepare main  sunxi_usb_udc gma301channel time: 1506787227s.934854 industrialio_triggered_buffer sunxi_gpadcms
[ISP]video device name is vi sunxi_aio vin_v4l2n_video2
[ISP]open video device nvp6124b vin_io[2] success!
W0930 16:00:27.935 videobuf2_dma_contig
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