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Diffstat (limited to 'include/linux/serial.h')
-rw-r--r--include/linux/serial.h15
1 files changed, 9 insertions, 6 deletions
diff --git a/include/linux/serial.h b/include/linux/serial.h
index 0b8b7d7c8f33..3d6fe3ef92cf 100644
--- a/include/linux/serial.h
+++ b/include/linux/serial.h
@@ -9,12 +9,20 @@
#ifndef _LINUX_SERIAL_H
#define _LINUX_SERIAL_H
-#include <asm/page.h>
#include <uapi/linux/serial.h>
+#include <uapi/linux/serial_reg.h>
/* Helper for dealing with UART_LCR_WLEN* defines */
#define UART_LCR_WLEN(x) ((x) - 5)
+/* FIFO and shifting register empty */
+#define UART_LSR_BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
+
+static inline bool uart_lsr_tx_empty(u16 lsr)
+{
+ return (lsr & UART_LSR_BOTH_EMPTY) == UART_LSR_BOTH_EMPTY;
+}
+
/*
* Counters of the input lines (CTS, DSR, RI, CD) interrupts
*/
@@ -25,11 +33,6 @@ struct async_icount {
__u32 buf_overrun;
};
-/*
- * The size of the serial xmit buffer is 1 page, or 4096 bytes
- */
-#define SERIAL_XMIT_SIZE PAGE_SIZE
-
#include <linux/compiler.h>
#endif /* _LINUX_SERIAL_H */