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authorJohan Hovold <johan@kernel.org>2021-04-21 12:55:00 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-04-22 13:09:25 +0300
commit493a275c04715cf0a571e017ad24e0b78af094eb (patch)
tree5494a5b2316561d4c0746e1f6f8bd249dafe6a4a /drivers/tty/serial/owl-uart.c
parentc0a6c9f79e5266d750b73bff5a61761827f4687d (diff)
downloadlinux-493a275c04715cf0a571e017ad24e0b78af094eb.tar.xz
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/owl-uart.c')
-rw-r--r--drivers/tty/serial/owl-uart.c2
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)