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-rw-r--r--sys/sys/cdio.h7
1 files changed, 0 insertions, 7 deletions
diff --git a/sys/sys/cdio.h b/sys/sys/cdio.h
index 3614d19..a3eb271 100644
--- a/sys/sys/cdio.h
+++ b/sys/sys/cdio.h
@@ -274,11 +274,4 @@ struct ioc_capability { /*<2>*/
#define CDIOCCAPABILITY _IOR('c',30,struct ioc_capability) /*<2>*/
-/*
- * Special version of CDIOCREADSUBCHANNEL which assumes that
- * ioc_read_subchannel->data points to the kernel memory. For
- * use in compatibility layers.
- */
-#define CDIOCREADSUBCHANNEL_SYSSPACE _IOWR('c', 31, struct ioc_read_subchannel)
-
#endif /* !_SYS_CDIO_H_ */
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