Extern or forward variable declaration drivers/clk/clk.h, line 9 [usage...] drivers/pinctrl/devicetree.h, line 8 [usage...] include/linux/clk.h, line 19 [usage...] include/linux/gpio/driver.h, line 15 [usage...] include/linux/interconnect-provider.h, line 15 [usage...] include/linux/of_pci.h, line 9 [usage...] include/linux/of_reserved_mem.h, line 7 [usage...] include/linux/reset-controller.h, line 27 [usage...] Structure include/linux/of.h, line 74 [usage...] Local variable drivers/dma/of-dma.c, line 101 [usage...] drivers/dma/of-dma.c, line 168 [usage...] include/linux/of_dma.h, line 55 [usage...] include/linux/of_dma.h, line 67 [usage...]