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| author |   Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2022-06-06 13:03:58 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-10 13:49:24 +0200 |
| commit | 8322b1f527159de578aab277629296575a11eb3c (patch) | |
| tree | bd5c2f3d3ac7023c53b5c63cb2db9de3f5f7c510 /drivers/tty/serial/serial_core.c | |
| parent | serial: 8250_dw: Store LSR into lsr_saved_flags in dw8250_tx_wait_empty() (diff) | |
| download | linux-dev-8322b1f527159de578aab277629296575a11eb3c.tar.xz linux-dev-8322b1f527159de578aab277629296575a11eb3c.zip | |
serial: Add uart_rs485_config()
A few serial drivers make a call to rs485_config() themselves (all
these seem to relate to init). Convert them all to use a common helper
which makes it easy to make adjustments on tasks related to it as
serial_rs485 struct sanitization is going to be added.
In pci_fintek_setup() (in 8250_pci.c), the rs485_config() call was made
with NULL, however, it can be changed to pass uart_port's rs485 struct.
No other callers should pass NULL into rs485_config() so the NULL check
can now be eliminated.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220606100433.13793-2-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/serial_core.c')
| -rw-r--r-- | drivers/tty/serial/serial_core.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 9a85b41caa0a..8466181db4e9 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -1276,6 +1276,12 @@ static int uart_get_icount(struct tty_struct *tty, return 0; } +int uart_rs485_config(struct uart_port *port) +{ + return port->rs485_config(port, &port->rs485); +} +EXPORT_SYMBOL_GPL(uart_rs485_config); + static int uart_get_rs485_config(struct uart_port *port, struct serial_rs485 __user *rs485) { |