From d5e22360e907dbf570116c3c08be0d3e5be43a23 Mon Sep 17 00:00:00 2001 From: Yan Xinyu Date: Mon, 25 Jul 2022 09:58:41 +0200 Subject: [PATCH] USB: serial: usb_wwan: replace DTR/RTS magic numbers with macros 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. Link: https://lore.kernel.org/r/20220722085040.704885-1-sdlyyxy@bupt.edu.cn [ johan: use the new CDC control-line defines ] Signed-off-by: Yan Xinyu Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20220725075841.1187-8-johan@kernel.org Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/usb_wwan.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index dab38b6..6129a6e 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include #include "usb-wwan.h" @@ -48,9 +49,9 @@ 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 |= USB_CDC_CTRL_DTR; if (portdata->rts_state) - val |= 0x02; + val |= USB_CDC_CTRL_RTS; ifnum = serial->interface->cur_altsetting->desc.bInterfaceNumber; @@ -59,8 +60,9 @@ 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); -- 2.7.4