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-rw-r--r--include/uapi/asm-generic/ioctls.h1
-rw-r--r--include/uapi/linux/serial.h3
-rw-r--r--include/uapi/linux/serial_core.h2
-rw-r--r--include/uapi/linux/tty.h1
4 files changed, 6 insertions, 1 deletions
diff --git a/include/uapi/asm-generic/ioctls.h b/include/uapi/asm-generic/ioctls.h
index 143dacbb7d9a..06d5f7ddf84e 100644
--- a/include/uapi/asm-generic/ioctls.h
+++ b/include/uapi/asm-generic/ioctls.h
@@ -77,6 +77,7 @@
#define TIOCGPKT _IOR('T', 0x38, int) /* Get packet mode state */
#define TIOCGPTLCK _IOR('T', 0x39, int) /* Get Pty lock state */
#define TIOCGEXCL _IOR('T', 0x40, int) /* Get exclusive mode state */
+#define TIOCGPTPEER _IOR('T', 0x41, int) /* Safely open the slave */
#define FIONCLEX 0x5450
#define FIOCLEX 0x5451
diff --git a/include/uapi/linux/serial.h b/include/uapi/linux/serial.h
index 5d59c3ebf459..d2667ecd54ac 100644
--- a/include/uapi/linux/serial.h
+++ b/include/uapi/linux/serial.h
@@ -122,6 +122,9 @@ struct serial_rs485 {
#define SER_RS485_RTS_AFTER_SEND (1 << 2) /* Logical level for
RTS pin after sent*/
#define SER_RS485_RX_DURING_TX (1 << 4)
+#define SER_RS485_TERMINATE_BUS (1 << 5) /* Enable bus
+ termination
+ (if supported) */
__u32 delay_rts_before_send; /* Delay before send (milliseconds) */
__u32 delay_rts_after_send; /* Delay after send (milliseconds) */
__u32 padding[5]; /* Memory is cheap, new structs
diff --git a/include/uapi/linux/serial_core.h b/include/uapi/linux/serial_core.h
index 9ec741b133fe..c34a2a3eeff5 100644
--- a/include/uapi/linux/serial_core.h
+++ b/include/uapi/linux/serial_core.h
@@ -83,7 +83,7 @@
/* Parisc type numbers. */
#define PORT_MUX 48
-/* Atmel AT91 / AT32 SoC */
+/* Atmel AT91 SoC */
#define PORT_ATMEL 49
/* Macintosh Zilog type numbers */
diff --git a/include/uapi/linux/tty.h b/include/uapi/linux/tty.h
index e7855dffd592..cf1455396df0 100644
--- a/include/uapi/linux/tty.h
+++ b/include/uapi/linux/tty.h
@@ -36,5 +36,6 @@
#define N_TRACEROUTER 24 /* Trace data routing for MIPI P1149.7 */
#define N_NCI 25 /* NFC NCI UART */
#define N_SPEAKUP 26 /* Speakup communication with synths */
+#define N_NULL 27 /* Null ldisc used for error handling */
#endif /* _UAPI_LINUX_TTY_H */