最近在调 aodzip 大神移植的cedar驱动，内核必须打开"DMA Contiguous Memory Allocator"选项，但是打开后发现触摸屏不好使了，原来是外部中断申请就失败"Goodix-TS 0-0014: request IRQ failed: -22"，真不知道这两者有什么关系？麻烦大家帮忙分析一下。
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[ 3.329176] input: sunxi-keyboard as /devices/virtual/input/input0
[ 3.341828] Goodix-TS 0-005d: ID 911, version: 1060
[ 3.351640] random: fast init done
[ 3.361495] input: Goodix Capacitive TouchScreen as /devices/platform/soc/twi0/i2c-0/0-005d/input/input1
[ 3.374963] Goodix-TS 0-005d: request IRQ failed: -22
[ 3.412322] Goodix-TS: probe of 0-005d failed with error -22
[ 3.421763] i2c /dev entries driver
[ 3.431286] usbcore: registered new interface driver uvcvideo同一个坑
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