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| author | Johan Hovold <johan@kernel.org> | 2021-04-21 11:55:07 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-22 12:09:26 +0200 |
| commit | 177765b350a06493b9437f814384f2a018fd7731 (patch) | |
| tree | 585a8add9f64c1e3e7a0e9eace026ee4f4bea313 | |
| parent | 3f6dbe6212bdd2094db84015ddef3d1f50fcde20 (diff) | |
| download | linux-177765b350a06493b9437f814384f2a018fd7731.tar.gz linux-177765b350a06493b9437f814384f2a018fd7731.tar.bz2 linux-177765b350a06493b9437f814384f2a018fd7731.zip | |
serial: timbuart: drop low-latency workaround
The timbuart driver has always carried a workaround for the infamous
low_latency behaviour of tty_flip_buffer_push() which required not
holding the port lock when the low_latency flag was set.
Since commit a9c3f68f3cd8 ("tty: Fix low_latency BUG"),
tty_flip_buffer_push() always schedules a work item to push data to the
line discipline and there's no need to keep any low_latency hacks
around.
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210421095509.3024-25-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/timbuart.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/tty/serial/timbuart.c b/drivers/tty/serial/timbuart.c index 2126e6e6dfd1..08941eabe7b1 100644 --- a/drivers/tty/serial/timbuart.c +++ b/drivers/tty/serial/timbuart.c @@ -87,9 +87,7 @@ static void timbuart_rx_chars(struct uart_port *port) tty_insert_flip_char(tport, ch, TTY_NORMAL); } - spin_unlock(&port->lock); tty_flip_buffer_push(tport); - spin_lock(&port->lock); dev_dbg(port->dev, "%s - total read %d bytes\n", __func__, port->icount.rx); |