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[PATCH] Serial: Add uart_insert_char()

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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
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drivers/serial/clps711x.c
+1 -4
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@@ -143,10 +143,7 @@ static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id, struct pt_regs *re
* CHECK: does overrun affect the current character?
* ASSUMPTION: it does not.
*/
if ((ch & port->ignore_status_mask & ~RXSTAT_OVERRUN) == 0)
tty_insert_flip_char(tty, ch, flg);
if ((ch & ~port->ignore_status_mask & RXSTAT_OVERRUN) == 0)
tty_insert_flip_char(tty, 0, TTY_OVERRUN);
uart_insert_char(port, ch, UARTDR_OVERR, ch, flg);
ignore_char:
status = clps_readl(SYSFLG(port));