Extern or forward variable declaration drivers/pinctrl/devicetree.h, line 19 [usage...] include/linux/clk.h, line 22 [usage...] include/linux/gpio/driver.h, line 15 [usage...] include/linux/of_reserved_mem.h, line 7 [usage...] include/linux/reset-controller.h, line 27 [usage...] Structure include/linux/of.h, line 76 [usage...] Local variable drivers/dma/of-dma.c, line 104 [usage...] drivers/dma/of-dma.c, line 171 [usage...] include/linux/of_dma.h, line 55 [usage...] include/linux/of_dma.h, line 67 [usage...]