apfs/linux-apfs
0
0
Fork 0
mirror of https://github.com/linux-apfs/linux-apfs.git synced 2026-05-01 15:00:59 -07:00
Code Issues Packages Projects 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
drivers/serial/amba-pl011.c
+2 -12
View File
@@ -163,18 +163,8 @@ pl011_rx_chars(struct uart_amba_port *uap)
if (uart_handle_sysrq_char(&uap->port, ch, regs))
goto ignore_char;
if ((rsr & uap->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(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
ignore_char:
status = readw(uap->port.membase + UART01x_FR);
}