[SERIAL] Clean up serial_core.c write functions.

Since the tty layer now takes care of user space writes,
__uart_user_write() and associated temporary buffer and temporary
buffer semaphore have all become unnecessary.  There's also little
point in having __uart_kern_write() separate from uart_write(), so
combine the two together.

Adrian Bunk kindly provided the patch to remove __uart_user_write().
The rest of the work is rmk's.

Signed-off-by: Adrian Bunk
Signed-off-by: Russell King <rmk@arm.linux.org.uk>

1 files changed, 1 insertions, 4 deletions

diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index daffe8c510ef..94653c5a256d 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -246,7 +246,7 @@ struct uart_state {
 	struct semaphore	sem;
 };
 
-#define UART_XMIT_SIZE 1024
+#define UART_XMIT_SIZE	PAGE_SIZE
 /*
  * This is the state information which is only valid when the port
  * is open; it may be freed by the core driver once the device has
@@ -268,9 +268,6 @@ struct uart_info {
 #define UIF_NORMAL_ACTIVE	(1 << 29)
 #define UIF_INITIALIZED		(1 << 31)
 
-	unsigned char		*tmpbuf;
-	struct semaphore	tmpbuf_sem;
-
 	int			blocked_open;
 
 	struct tasklet_struct	tlet;