Extern or forward variable declaration at include/sound/core.h, line 28 References: drivers/media/pci/cx18/cx18-alsa-main.c, line 133 drivers/media/pci/saa7134/saa7134.h, line 570 drivers/media/pci/saa7134/saa7134.h, line 755 drivers/media/pci/saa7134/saa7134.h, line 756 drivers/media/pci/saa7134/saa7134.h, line 759 drivers/media/pci/tw686x/tw686x-audio.c, line 289 drivers/media/pci/tw686x/tw686x-audio.c, line 303 drivers/media/pci/tw686x/tw686x-audio.c, line 327 drivers/media/pci/tw686x/tw686x-audio.c, line 330 drivers/media/pci/tw686x/tw686x-audio.c, line 363 drivers/media/pci/tw686x/tw686x-audio.c, line 363 drivers/media/pci/tw686x/tw686x-audio.c, line 363 drivers/media/pci/tw686x/tw686x-audio.c, line 370 drivers/media/pci/tw686x/tw686x-audio.c, line 379 drivers/media/pci/tw686x/tw686x-audio.c, line 380 sound/core/misc.c, line 138 sound/hda/hdac_i915.c, line 38 sound/pci/cs46xx/cs46xx.c, line 61 sound/pci/cs46xx/cs46xx.c, line 144 sound/pci/ctxfi/ctatc.h, line 74 sound/pci/ctxfi/ctatc.h, line 151 sound/pci/ctxfi/cthardware.h, line 183 sound/pci/ctxfi/cthardware.h, line 193 sound/pci/ctxfi/xfi.c, line 57 sound/pci/ctxfi/xfi.c, line 121 sound/pci/oxygen/oxygen.c, line 837 sound/pci/oxygen/se6x.c, line 119 sound/pci/oxygen/virtuoso.c, line 63 sound/pci/trident/trident.c, line 61 sound/pci/trident/trident.c, line 155 sound/pci/ymfpci/ymfpci.c, line 159 sound/pci/ymfpci/ymfpci.c, line 339