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@@ -60,6 +60,9 @@ static struct acm *acm_table[ACM_TTY_MINORS];
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static DEFINE_MUTEX(acm_table_lock);
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+static void acm_tty_set_termios(struct tty_struct *tty,
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+ struct ktermios *termios_old);
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+
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/*
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* acm_table accessors
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*/
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@@ -145,8 +148,15 @@ static int acm_ctrl_msg(struct acm *acm, int request, int value,
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/* devices aren't required to support these requests.
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* the cdc acm descriptor tells whether they do...
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*/
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-#define acm_set_control(acm, control) \
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- acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
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+static inline int acm_set_control(struct acm *acm, int control)
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+{
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+ if (acm->quirks & QUIRK_CONTROL_LINE_STATE)
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+ return -EOPNOTSUPP;
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+
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+ return acm_ctrl_msg(acm, USB_CDC_REQ_SET_CONTROL_LINE_STATE,
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+ control, NULL, 0);
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+}
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+
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#define acm_set_line(acm, line) \
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acm_ctrl_msg(acm, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
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#define acm_send_break(acm, ms) \
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@@ -554,6 +564,8 @@ static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
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goto error_submit_urb;
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}
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+ acm_tty_set_termios(tty, NULL);
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+
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/*
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* Unthrottle device in case the TTY was closed while throttled.
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*/
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@@ -980,11 +992,12 @@ static void acm_tty_set_termios(struct tty_struct *tty,
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/* FIXME: Needs to clear unsupported bits in the termios */
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acm->clocal = ((termios->c_cflag & CLOCAL) != 0);
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- if (!newline.dwDTERate) {
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+ if (C_BAUD(tty) == B0) {
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newline.dwDTERate = acm->line.dwDTERate;
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newctrl &= ~ACM_CTRL_DTR;
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- } else
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+ } else if (termios_old && (termios_old->c_cflag & CBAUD) == B0) {
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newctrl |= ACM_CTRL_DTR;
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+ }
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if (newctrl != acm->ctrlout)
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acm_set_control(acm, acm->ctrlout = newctrl);
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@@ -1314,6 +1327,7 @@ static int acm_probe(struct usb_interface *intf,
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tty_port_init(&acm->port);
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acm->port.ops = &acm_port_ops;
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init_usb_anchor(&acm->delayed);
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+ acm->quirks = quirks;
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buf = usb_alloc_coherent(usb_dev, ctrlsize, GFP_KERNEL, &acm->ctrl_dma);
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if (!buf) {
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@@ -1681,6 +1695,9 @@ static const struct usb_device_id acm_ids[] = {
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{ USB_DEVICE(0x0572, 0x1328), /* Shiro / Aztech USB MODEM UM-3100 */
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.driver_info = NO_UNION_NORMAL, /* has no union descriptor */
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},
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+ { USB_DEVICE(0x20df, 0x0001), /* Simtec Electronics Entropy Key */
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+ .driver_info = QUIRK_CONTROL_LINE_STATE, },
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+ { USB_DEVICE(0x2184, 0x001c) }, /* GW Instek AFG-2225 */
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{ USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
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},
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/* Motorola H24 HSPA module: */
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