Extern or forward variable declaration at include/linux/iio/adc/ad_sigma_delta.h, line 30 References: drivers/iio/adc/ad7791.c, line 200 drivers/iio/adc/ad7791.c, line 261 drivers/iio/adc/ad7791.c, line 271 drivers/iio/adc/ad7791.c, line 357 drivers/iio/adc/ad7791.c, line 419 drivers/iio/adc/ad7793.c, line 255 drivers/iio/adc/ad7793.c, line 355 drivers/iio/adc/ad7793.c, line 367 drivers/iio/adc/ad7793.c, line 415 drivers/iio/adc/ad7793.c, line 453 drivers/iio/adc/ad7793.c, line 519 drivers/iio/adc/ad7793.c, line 562 drivers/iio/adc/ad7793.c, line 747 drivers/iio/adc/ad7793.c, line 826 drivers/iio/adc/ad_sigma_delta.c, line 247 drivers/iio/adc/ad_sigma_delta.c, line 307 drivers/iio/adc/ad_sigma_delta.c, line 342 drivers/iio/adc/ad_sigma_delta.c, line 363 drivers/iio/adc/ad_sigma_delta.c, line 426 drivers/iio/adc/ad_sigma_delta.c, line 441 drivers/iio/adc/ad_sigma_delta.c, line 487 drivers/iio/adc/ad_sigma_delta.c, line 500 drivers/iio/adc/ad_sigma_delta.c, line 523 drivers/iio/adc/ad_sigma_delta.c, line 540 drivers/staging/iio/adc/ad7192.c, line 206 drivers/staging/iio/adc/ad7192.c, line 312 drivers/staging/iio/adc/ad7192.c, line 324 drivers/staging/iio/adc/ad7192.c, line 364 drivers/staging/iio/adc/ad7192.c, line 388 drivers/staging/iio/adc/ad7192.c, line 398 drivers/staging/iio/adc/ad7192.c, line 409 drivers/staging/iio/adc/ad7192.c, line 489 drivers/staging/iio/adc/ad7192.c, line 530 drivers/staging/iio/adc/ad7192.c, line 572 drivers/staging/iio/adc/ad7192.c, line 613 drivers/staging/iio/adc/ad7192.c, line 686 drivers/staging/iio/adc/ad7780.c, line 86 drivers/staging/iio/adc/ad7780.c, line 168 drivers/staging/iio/adc/ad7780.c, line 242 include/linux/iio/adc/ad_sigma_delta.h, line 30 include/linux/iio/adc/ad_sigma_delta.h, line 114 include/linux/iio/adc/ad_sigma_delta.h, line 118 include/linux/iio/adc/ad_sigma_delta.h, line 121 include/linux/iio/adc/ad_sigma_delta.h, line 122 include/linux/iio/adc/ad_sigma_delta.h, line 124