diff options
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index 8e0636c963a7..7b366a6c0b49 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -174,6 +174,7 @@ static int acm_wb_alloc(struct acm *acm) wb = &acm->wb[wbn]; if (!wb->use) { wb->use = 1; + wb->len = 0; return wbn; } wbn = (wbn + 1) % ACM_NW; @@ -235,7 +236,7 @@ static int acm_start_wb(struct acm *acm, struct acm_wb *wb) /* * attributes exported through sysfs */ -static ssize_t show_caps +static ssize_t bmCapabilities_show (struct device *dev, struct device_attribute *attr, char *buf) { struct usb_interface *intf = to_usb_interface(dev); @@ -243,9 +244,9 @@ static ssize_t show_caps return sprintf(buf, "%d", acm->ctrl_caps); } -static DEVICE_ATTR(bmCapabilities, S_IRUGO, show_caps, NULL); +static DEVICE_ATTR_RO(bmCapabilities); -static ssize_t show_country_codes +static ssize_t wCountryCodes_show (struct device *dev, struct device_attribute *attr, char *buf) { struct usb_interface *intf = to_usb_interface(dev); @@ -255,9 +256,9 @@ static ssize_t show_country_codes return acm->country_code_size; } -static DEVICE_ATTR(wCountryCodes, S_IRUGO, show_country_codes, NULL); +static DEVICE_ATTR_RO(wCountryCodes); -static ssize_t show_country_rel_date +static ssize_t iCountryCodeRelDate_show (struct device *dev, struct device_attribute *attr, char *buf) { struct usb_interface *intf = to_usb_interface(dev); @@ -266,7 +267,7 @@ static ssize_t show_country_rel_date return sprintf(buf, "%d", acm->country_rel_date); } -static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); +static DEVICE_ATTR_RO(iCountryCodeRelDate); /* * Interrupt handlers for various ACM device responses */ @@ -425,7 +426,7 @@ static int acm_submit_read_urb(struct acm *acm, int index, gfp_t mem_flags) res = usb_submit_urb(acm->read_urbs[index], mem_flags); if (res) { - if (res != -EPERM) { + if (res != -EPERM && res != -ENODEV) { dev_err(&acm->data->dev, "urb %d failed submission with %d\n", index, res); @@ -805,16 +806,18 @@ static int acm_tty_write(struct tty_struct *tty, static void acm_tty_flush_chars(struct tty_struct *tty) { struct acm *acm = tty->driver_data; - struct acm_wb *cur = acm->putbuffer; + struct acm_wb *cur; int err; unsigned long flags; + spin_lock_irqsave(&acm->write_lock, flags); + + cur = acm->putbuffer; if (!cur) /* nothing to do */ - return; + goto out; acm->putbuffer = NULL; err = usb_autopm_get_interface_async(acm->control); - spin_lock_irqsave(&acm->write_lock, flags); if (err < 0) { cur->use = 0; acm->putbuffer = cur; @@ -1752,6 +1755,9 @@ static const struct usb_device_id acm_ids[] = { { USB_DEVICE(0x0ace, 0x1611), /* ZyDAS 56K USB MODEM - new version */ .driver_info = SINGLE_RX_URB, /* firmware bug */ }, + { USB_DEVICE(0x11ca, 0x0201), /* VeriFone Mx870 Gadget Serial */ + .driver_info = SINGLE_RX_URB, + }, { USB_DEVICE(0x22b8, 0x7000), /* Motorola Q Phone */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ }, |