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| author |   Johan Hovold <johan@kernel.org> | 2021-04-21 11:55:09 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-22 12:09:26 +0200 |
| commit | 348fbd61700ce0527625582aee8bb136373f10af (patch) | |
| tree | 2de4a18c31c20799a1db17288772af5451b9b04f /drivers/tty/serial/xilinx_uartps.c | |
| parent | serial: vt8500: drop low-latency workaround (diff) | |
| download | linux-dev-348fbd61700ce0527625582aee8bb136373f10af.tar.xz linux-dev-348fbd61700ce0527625582aee8bb136373f10af.zip | |
serial: xilinx_uartps: drop low-latency workaround
Commit c8dbdc842d30 ("serial: xuartps: Rewrite the interrupt handling
logic") reworked the driver interrupt processing but also, without
comment, added an unnecessary workaround for the infamous low_latency
behaviour of tty_flip_buffer_push() which had been removed years
before.
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.
Cc: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20210421095509.3024-27-johan@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/xilinx_uartps.c')
| -rw-r--r-- | drivers/tty/serial/xilinx_uartps.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index a14c5d996473..67a2db621e2b 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -301,9 +301,8 @@ static void cdns_uart_handle_rx(void *dev_id, unsigned int isrstatus) tty_insert_flip_char(&port->state->port, data, status); isrstatus = 0; } - spin_unlock(&port->lock); + tty_flip_buffer_push(&port->state->port); - spin_lock(&port->lock); } /** |