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@@ -99,6 +99,12 @@
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* cease I/O to the tty driver. Can sleep. The driver should
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* seek to perform this action quickly but should wait until
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* any pending driver I/O is completed.
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+ *
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+ * void (*dcd_change)(struct tty_struct *tty, unsigned int status,
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+ * struct timespec *ts)
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+ *
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+ * Tells the discipline that the DCD pin has changed its status and
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+ * the relative timestamp. Pointer ts can be NULL.
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*/
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#include <linux/fs.h>
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@@ -136,6 +142,8 @@ struct tty_ldisc_ops {
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void (*receive_buf)(struct tty_struct *, const unsigned char *cp,
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char *fp, int count);
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void (*write_wakeup)(struct tty_struct *);
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+ void (*dcd_change)(struct tty_struct *, unsigned int,
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+ struct timespec *);
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struct module *owner;
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