lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] Serial: Add uart_insert_char()

Browse Source 
Add uart_insert_char(), which handles inserting characters into the
flip buffer.  This helper function handles the correct semantics
for handling overrun in addition to inserting normal characters.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>
This commit is contained in:
Russell King
2005-05-09 23:21:59 +01:00
parent 88d7bd8cb9
commit 05ab301463
12 changed files with 41 additions and 110 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/serial/amba-pl010.c
View File

@@ -198,18 +198,8 @@ pl010_rx_chars(struct uart_port *port)
if (uart_handle_sysrq_char(port, ch, regs))
goto ignore_char;
if ((rsr & port->ignore_status_mask) == 0) {
tty_insert_flip_char(tty, ch, flag);
}
if ((rsr & UART01x_RSR_OE) &&
tty->flip.count < TTY_FLIPBUF_SIZE) {
/*
* Overrun is special, since it's reported
* immediately, and doesn't affect the current
* character
*/
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
}
uart_insert_char(port, rsr, UART01x_RSR_OE, ch, flag);
ignore_char:
status = UART_GET_FR(port);
}