The usb_wwan_send_setup function generates DTR/RTS signals in compliance with CDC ACM standard. This patch changes magic numbers in this function to equivalent macros. Signed-off-by: Yan Xinyu <sdlyyxy@xxxxxxxxxxx> --- v1->v2: * Fix Signed-off-by name. --- drivers/usb/serial/usb_wwan.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index dab38b63eaf7..a6bd6144702d 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -29,10 +29,14 @@ #include <linux/bitops.h> #include <linux/uaccess.h> #include <linux/usb.h> +#include <linux/usb/cdc.h> #include <linux/usb/serial.h> #include <linux/serial.h> #include "usb-wwan.h" +#define ACM_CTRL_DTR 0x01 +#define ACM_CTRL_RTS 0x02 + /* * Generate DTR/RTS signals on the port using the SET_CONTROL_LINE_STATE request * in CDC ACM. @@ -48,9 +52,9 @@ static int usb_wwan_send_setup(struct usb_serial_port *port) portdata = usb_get_serial_port_data(port); if (portdata->dtr_state) - val |= 0x01; + val |= ACM_CTRL_DTR; if (portdata->rts_state) - val |= 0x02; + val |= ACM_CTRL_RTS; ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; @@ -59,8 +63,9 @@ static int usb_wwan_send_setup(struct usb_serial_port *port) return res; res = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - 0x22, 0x21, val, ifnum, NULL, 0, - USB_CTRL_SET_TIMEOUT); + USB_CDC_REQ_SET_CONTROL_LINE_STATE, + USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE, + val, ifnum, NULL, 0, USB_CTRL_SET_TIMEOUT); usb_autopm_put_interface(port->serial->interface); -- 2.25.1
