From d5e22360e907dbf570116c3c08be0d3e5be43a23 Mon Sep 17 00:00:00 2001 From: Yan Xinyu Date: Mon, 25 Jul 2022 09:58:41 +0200 Subject: 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(-) (limited to 'drivers/usb/serial/usb_wwan.c') diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index dab38b63eaf7..6129a6e26f2c 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); -- cgit From 688ee1d1785c1359f9040f615dd8e6054962bce2 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Mon, 25 Jul 2022 10:44:57 +0200 Subject: USB: serial: fix tty-port initialized comments Fix up the tty-port initialized comments which got truncated and obfuscated when replacing the old ASYNCB_INITIALIZED flag. Fixes: d41861ca19c9 ("tty: Replace ASYNC_INITIALIZED bit and update atomically") Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold --- drivers/usb/serial/sierra.c | 3 ++- drivers/usb/serial/usb-serial.c | 2 +- drivers/usb/serial/usb_wwan.c | 3 ++- 3 files changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/usb/serial/usb_wwan.c') diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index 525c7f888c90..353b2549eaa8 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -735,7 +735,8 @@ static void sierra_close(struct usb_serial_port *port) /* * Need to take susp_lock to make sure port is not already being - * resumed, but no need to hold it due to initialized + * resumed, but no need to hold it due to the tty-port initialized + * flag. */ spin_lock_irq(&intfdata->susp_lock); if (--intfdata->open_ports == 0) diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 24101bd7fcad..e35bea2235c1 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -295,7 +295,7 @@ static int serial_open(struct tty_struct *tty, struct file *filp) * * Shut down a USB serial port. Serialized against activate by the * tport mutex and kept to matching open/close pairs - * of calls by the initialized flag. + * of calls by the tty-port initialized flag. * * Not called if tty is console. */ diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index dab38b63eaf7..cc81ab7ef4da 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -388,7 +388,8 @@ void usb_wwan_close(struct usb_serial_port *port) /* * Need to take susp_lock to make sure port is not already being - * resumed, but no need to hold it due to initialized + * resumed, but no need to hold it due to the tty-port initialized + * flag. */ spin_lock_irq(&intfdata->susp_lock); if (--intfdata->open_ports == 0) -- cgit