diff options
| author | Johan Hovold <johan@kernel.org> | 2021-04-21 12:55:01 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-22 13:09:26 +0300 |
| commit | 2225ee132c61481a7ed73d78c2bee9e775173262 (patch) | |
| tree | 237cea07d23ebe8842902d6b8dda1fbfc1eaf055 /drivers/tty | |
| parent | 493a275c04715cf0a571e017ad24e0b78af094eb (diff) | |
| download | linux-2225ee132c61481a7ed73d78c2bee9e775173262.tar.xz | |
serial: rda: drop low-latency workaround
The rda 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 c10b13325ced
("tty: serial: Add RDA8810PL UART 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/20210421095509.3024-19-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/rda-uart.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/tty/serial/rda-uart.c b/drivers/tty/serial/rda-uart.c index 85366e059258..d550d8fa2fab 100644 --- a/drivers/tty/serial/rda-uart.c +++ b/drivers/tty/serial/rda-uart.c @@ -398,9 +398,7 @@ static void rda_uart_receive_chars(struct uart_port *port) status = rda_uart_read(port, RDA_UART_STATUS); } - spin_unlock(&port->lock); tty_flip_buffer_push(&port->state->port); - spin_lock(&port->lock); } static irqreturn_t rda_interrupt(int irq, void *dev_id) |