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| author | Jiri Slaby <jslaby@suse.cz> | 2022-09-20 07:20:41 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-22 16:14:07 +0200 |
| commit | 0c0bfc6b14388356ce6016b9d548ac8b874013e0 (patch) | |
| tree | f4a1873a63c5b7f08bef78846101825efb755a60 /drivers/tty | |
| parent | eef7381d8134f249dc17138bb1794c249aff7f5a (diff) | |
| download | linux-stable-0c0bfc6b14388356ce6016b9d548ac8b874013e0.tar.gz linux-stable-0c0bfc6b14388356ce6016b9d548ac8b874013e0.tar.bz2 linux-stable-0c0bfc6b14388356ce6016b9d548ac8b874013e0.zip | |
tty: serial: move and cleanup vt8500_tx_empty()
Make vt8500_tx_empty() more readable by introducing a new local variable
and move the function before handle_tx(). That way we can reuse it in
there too.
Cc: <linux-arm-kernel@lists.infradead.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220920052049.20507-2-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/vt8500_serial.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c index 508ad7afa6de..10fbdb09965f 100644 --- a/drivers/tty/serial/vt8500_serial.c +++ b/drivers/tty/serial/vt8500_serial.c @@ -187,6 +187,13 @@ static void handle_rx(struct uart_port *port) tty_flip_buffer_push(tport); } +static unsigned int vt8500_tx_empty(struct uart_port *port) +{ + unsigned int idx = vt8500_read(port, VT8500_URFIDX) & 0x1f; + + return idx < 16 ? TIOCSER_TEMT : 0; +} + static void handle_tx(struct uart_port *port) { struct circ_buf *xmit = &port->state->xmit; @@ -201,7 +208,7 @@ static void handle_tx(struct uart_port *port) return; } - while ((vt8500_read(port, VT8500_URFIDX) & 0x1f) < 16) { + while (vt8500_tx_empty(port)) { if (uart_circ_empty(xmit)) break; @@ -260,12 +267,6 @@ static irqreturn_t vt8500_irq(int irq, void *dev_id) return IRQ_HANDLED; } -static unsigned int vt8500_tx_empty(struct uart_port *port) -{ - return (vt8500_read(port, VT8500_URFIDX) & 0x1f) < 16 ? - TIOCSER_TEMT : 0; -} - static unsigned int vt8500_get_mctrl(struct uart_port *port) { unsigned int usr; |