diff options
| author |   Johan Hovold <johan@kernel.org> | 2021-04-12 11:47:31 +0200 |
|---|---|---|
| committer | Johan Hovold <johan@kernel.org> | 2021-04-13 18:23:29 +0200 |
| commit | 13c613393cee59a6f6fd4627f7003606392690d1 (patch) | |
| tree | 2aa40c6b487f854afc9e8fdb169b023c91880baa /drivers/usb/serial | |
| parent | USB: serial: io_ti: add send-port-command helper (diff) | |
| download | linux-dev-13c613393cee59a6f6fd4627f7003606392690d1.tar.xz linux-dev-13c613393cee59a6f6fd4627f7003606392690d1.zip | |
USB: serial: io_ti: add read-port-command helper
Add a read-port-command helper analogous to the send-port-command
helper to take care of the UART module id instead of open coding.
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Diffstat (limited to 'drivers/usb/serial')
| -rw-r--r-- | drivers/usb/serial/io_ti.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index f65a712078ab..480a73aff78f 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -284,6 +284,14 @@ static int ti_vsend_sync(struct usb_device *dev, u8 request, u16 value, return 0; } +static int read_port_cmd(struct usb_serial_port *port, u8 command, u16 value, + void *data, int size) +{ + return ti_vread_sync(port->serial->dev, command, value, + UMPM_UART1_PORT + port->port_number, + data, size); +} + static int send_port_cmd(struct usb_serial_port *port, u8 command, u16 value, void *data, int size) { @@ -1826,7 +1834,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) struct edgeport_serial *edge_serial; struct usb_device *dev; struct urb *urb; - int port_number; int status; u16 open_settings; u8 transaction_timeout; @@ -1834,8 +1841,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) if (edge_port == NULL) return -ENODEV; - port_number = port->port_number; - dev = port->serial->dev; /* turn off loopback */ @@ -1892,9 +1897,7 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) } /* Read Initial MSR */ - status = ti_vread_sync(dev, UMPC_READ_MSR, 0, - (__u16)(UMPM_UART1_PORT + port_number), - &edge_port->shadow_msr, 1); + status = read_port_cmd(port, UMPC_READ_MSR, 0, &edge_port->shadow_msr, 1); if (status) { dev_err(&port->dev, "%s - cannot send read MSR command, %d\n", __func__, status); |