rockchip3399 kernel (develop5.10) make errors in drivers/media/i2c/lt8619c.c

[wahahawasabi]

Using linaro gcc-linaro-7.5.0-2019.12-x86_64_aarch64-linux-gnu to compile, it reported this error in the make process:

drivers/media/i2c/lt8619c.c: In function 'lt8619c_get_detected_timings':
drivers/media/i2c/lt8619c.c:356:13: warning: '*' in boolean context, suggest '&&' instead [-Wint-in-bool-context]
error, forbidden warning:lt8619c.c:356
  if (htotal * vtotal)
      ~~~~~~~^~~~~~~~

Reproducibility:

1. git checkout develop-5.10
2. Adding dtsi and dts into arch/arm64/boot/dts.
3. Adding tinker_board_2_defconfig into /arch/arm64/configs
4. modifying rename rkvdec_mmu to vdec_mmu in rk3399-tinker_board_2.dtsi
5. RK_GPIO2 to &gpio2 rk3399-tinker_board_2.dtsi
6. make ARCH=arm64 CROSS_COMPILE=/home/jakew/tinkeros/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- tinker_board_2_defconfig -j16
7. make ARCH=arm64 CROSS_COMPILE=/home/jakew/tinkeros/gcc-linaro-6.3.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- rk3399-tinker_board_2.img -j16

Any ideas?