mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b0a9aa6da8
Use tty-port initialised flag rather than private flag to determine when port is closing down. Since the tty-port flag is set prior to dropping DTR/RTS (when HUPCL is set) this avoid submitting the read urbs when resuming the interface in dtr_rts() only to immediately kill them again in shutdown(). Signed-off-by: Johan Hovold <jhovold@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/*
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* Definitions for USB serial mobile broadband cards
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*/
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#ifndef __LINUX_USB_USB_WWAN
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#define __LINUX_USB_USB_WWAN
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extern void usb_wwan_dtr_rts(struct usb_serial_port *port, int on);
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extern int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port);
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extern void usb_wwan_close(struct usb_serial_port *port);
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extern int usb_wwan_port_probe(struct usb_serial_port *port);
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extern int usb_wwan_port_remove(struct usb_serial_port *port);
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extern int usb_wwan_write_room(struct tty_struct *tty);
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extern int usb_wwan_tiocmget(struct tty_struct *tty);
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extern int usb_wwan_tiocmset(struct tty_struct *tty,
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unsigned int set, unsigned int clear);
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extern int usb_wwan_ioctl(struct tty_struct *tty,
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unsigned int cmd, unsigned long arg);
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extern int usb_wwan_write(struct tty_struct *tty, struct usb_serial_port *port,
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const unsigned char *buf, int count);
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extern int usb_wwan_chars_in_buffer(struct tty_struct *tty);
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#ifdef CONFIG_PM
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extern int usb_wwan_suspend(struct usb_serial *serial, pm_message_t message);
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extern int usb_wwan_resume(struct usb_serial *serial);
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#endif
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/* per port private data */
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#define N_IN_URB 4
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#define N_OUT_URB 4
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#define IN_BUFLEN 4096
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#define OUT_BUFLEN 4096
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struct usb_wwan_intf_private {
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spinlock_t susp_lock;
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unsigned int suspended:1;
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int in_flight;
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unsigned int open_ports;
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int (*send_setup) (struct usb_serial_port *port);
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void *private;
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};
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struct usb_wwan_port_private {
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/* Input endpoints and buffer for this port */
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struct urb *in_urbs[N_IN_URB];
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u8 *in_buffer[N_IN_URB];
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/* Output endpoints and buffer for this port */
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struct urb *out_urbs[N_OUT_URB];
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u8 *out_buffer[N_OUT_URB];
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unsigned long out_busy; /* Bit vector of URBs in use */
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struct usb_anchor delayed;
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/* Settings for the port */
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int rts_state; /* Handshaking pins (outputs) */
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int dtr_state;
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int cts_state; /* Handshaking pins (inputs) */
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int dsr_state;
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int dcd_state;
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int ri_state;
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unsigned long tx_start_time[N_OUT_URB];
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};
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#endif /* __LINUX_USB_USB_WWAN */
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