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.
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/usb/serial/io_ti.c | 15 +++++++++------
1 file 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);
--
2.26.3
