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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-02-22 01:12:47 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2016-02-22 01:12:47 -0300
commit6d461a4fe7896faa1aec5a5417888cf179e46b9f (patch)
tree2e0f1a0b7a5418189c8d53592d33a44d0b356fc9 /drivers/usb/class
parent5c545e1fb127a4b11ddc5f1a5ed066b853dd1a1a (diff)
Linux-libre 4.4.2-gnupck-4.4.2-gnu
Diffstat (limited to 'drivers/usb/class')
-rw-r--r--drivers/usb/class/cdc-acm.c9
-rw-r--r--drivers/usb/class/cdc-acm.h1
2 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 26ca4f910..e4c70dce3 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -428,7 +428,8 @@ static void acm_read_bulk_callback(struct urb *urb)
set_bit(rb->index, &acm->read_urbs_free);
dev_dbg(&acm->data->dev, "%s - non-zero urb status: %d\n",
__func__, status);
- return;
+ if ((status != -ENOENT) || (urb->actual_length == 0))
+ return;
}
usb_mark_last_busy(acm->dev);
@@ -1404,6 +1405,8 @@ made_compressed_probe:
usb_sndbulkpipe(usb_dev, epwrite->bEndpointAddress),
NULL, acm->writesize, acm_write_bulk, snd);
snd->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
+ if (quirks & SEND_ZERO_PACKET)
+ snd->urb->transfer_flags |= URB_ZERO_PACKET;
snd->instance = acm;
}
@@ -1861,6 +1864,10 @@ static const struct usb_device_id acm_ids[] = {
{ USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
USB_CDC_ACM_PROTO_AT_CDMA) },
+ { USB_DEVICE(0x1519, 0x0452), /* Intel 7260 modem */
+ .driver_info = SEND_ZERO_PACKET,
+ },
+
{ }
};
diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h
index dd9af38e7..ccfaba9ab 100644
--- a/drivers/usb/class/cdc-acm.h
+++ b/drivers/usb/class/cdc-acm.h
@@ -134,3 +134,4 @@ struct acm {
#define IGNORE_DEVICE BIT(5)
#define QUIRK_CONTROL_LINE_STATE BIT(6)
#define CLEAR_HALT_CONDITIONS BIT(7)
+#define SEND_ZERO_PACKET BIT(8)