Extern or forward variable declaration at include/linux/regmap.h, line 446 References: drivers/base/regmap/internal.h, line 43 drivers/base/regmap/internal.h, line 264 drivers/base/regmap/regmap-spi.c, line 16 drivers/base/regmap/regmap-spi.c, line 56 drivers/base/regmap/regmap-spi.c, line 80 drivers/base/regmap/regmap.c, line 1340 drivers/base/regmap/regmap.c, line 1350 drivers/base/regmap/regmap.c, line 1564 drivers/base/regmap/regmap.c, line 1570 drivers/base/regmap/regmap.c, line 2932 drivers/base/regmap/trace.h, line 178 drivers/base/regmap/trace.h, line 202 drivers/base/regmap/trace.h, line 210 drivers/base/regmap/trace.h, line 218 drivers/net/can/m_can/tcan4x5x.c, line 200 drivers/net/can/m_can/tcan4x5x.c, line 205 include/linux/regmap.h, line 446 include/linux/regmap.h, line 456 include/linux/regmap.h, line 466