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有了浮点数运算的ICM42686驱动编译通过后，启动内核报错，如下：

[    0.415753] --- icm42686_init ---
[    0.415817] --- spi_match_device ---
[    0.415880] --- spi_drv_probe ---
[    0.416090] --- icm42686 probe ---
[    0.439919] mmc_host mmc0: Bus speed (slot 0) = 198000000Hz (slot req 200000000Hz, actual 198000000HZ div = 0)
[    0.439977] dwmmc_rockchip ffc50000.dwmmc: Successfully tuned phase to 90
[    0.440666] mmc0: new HS200 MMC card at address 0001
[    0.442242] mmcblk0: mmc0:0001 AJTD4R 14.6 GiB
[    0.443150] mmcblk0boot0: mmc0:0001 AJTD4R partition 1 4.00 MiB
[    0.444030] mmcblk0boot1: mmc0:0001 AJTD4R partition 2 4.00 MiB
[    0.444728] mmcblk0rpmb: mmc0:0001 AJTD4R partition 3 4.00 MiB, chardev (242:0)
[    0.452505]  mmcblk0: p1 p2 p3 p4 p5 p6 p7 p8 p9
[    0.518613] --- icm42686 ID = 0x44 ---
[    0.522191] BUG: FP instruction issued in kernel mode with FP unit disabled
[    0.522235] Internal error: Oops - undefined instruction: 0 [#1] PREEMPT SMP ARM
[    0.523502] Modules linked in:
[    0.523796] CPU: 2 PID: 1 Comm: swapper/0 Not tainted 4.19.111 #49
[    0.524340] Hardware name: Generic DT based system
[    0.524775] PC is at icm42686_get_data_front+0xc/0x21c
[    0.525236] LR is at icm42686_probe+0x134/0x18c