diff options
| author | Johan Hovold <johan@kernel.org> | 2021-04-21 11:55:00 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-22 12:09:25 +0200 |
| commit | 493a275c04715cf0a571e017ad24e0b78af094eb (patch) | |
| tree | 5494a5b2316561d4c0746e1f6f8bd249dafe6a4a /drivers/tty/serial | |
| parent | c0a6c9f79e5266d750b73bff5a61761827f4687d (diff) | |
serial: owl: drop low-latency workaround
The owl driver has always carried an unnecessary workaround for the
infamous low_latency behaviour of tty_flip_buffer_push(), which had
been removed years before the driver was added by commit fc60a8b675bd
("tty: serial: owl: Implement console driver").
Specifically, 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/20210421095509.3024-18-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/owl-uart.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/tty/serial/owl-uart.c b/drivers/tty/serial/owl-uart.c index abc6042f0378..91f1eb0058d7 100644 --- a/drivers/tty/serial/owl-uart.c +++ b/drivers/tty/serial/owl-uart.c @@ -247,9 +247,7 @@ static void owl_uart_receive_chars(struct uart_port *port) stat = owl_uart_read(port, OWL_UART_STAT); } - spin_unlock(&port->lock); tty_flip_buffer_push(&port->state->port); - spin_lock(&port->lock); } static irqreturn_t owl_uart_irq(int irq, void *dev_id) |