cr21              131 arch/parisc/include/asm/asmregs.h ior:	.reg	%cr21
cr21              158 arch/parisc/include/asm/asmregs.h cr21:	.reg	%cr21
cr21              299 drivers/gpu/drm/nouveau/dispnv04/hw.h 	uint8_t cr21 = lock;
cr21              303 drivers/gpu/drm/nouveau/dispnv04/hw.h 		cr21 = NVReadVgaCrtc(dev, head, NV_CIO_CRE_21) | 0xfa;
cr21              305 drivers/gpu/drm/nouveau/dispnv04/hw.h 	NVWriteVgaCrtc(dev, head, NV_CIO_CRE_21, cr21);