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USB: cdc-acm: fix incorrect throtteling, make set_control optional

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this is Joris' fixes reshuffelled and features renamed as David requested.

- acm_set_control is not mandatory, honour that
- throtteling is reset upon open
- throtteling is read consistently when processing input data

Signed-off-by: Joris van Rantwijk <jorispubl@xs4all.nl>
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Oliver Neukum
2007-02-12 08:41:35 +01:00
committed by Greg Kroah-Hartman
parent 3f141e2aed
commit ca79b7b415
2 changed files with 25 additions and 11 deletions
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7
include/linux/usb/cdc.h
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@@ -73,6 +73,13 @@ struct usb_cdc_acm_descriptor {
__u8 bmCapabilities;
} __attribute__ ((packed));
/* capabilities from 5.2.3.3 */
#define USB_CDC_COMM_FEATURE 0x01
#define USB_CDC_CAP_LINE 0x02
#define USB_CDC_CAP_BRK 0x04
#define USB_CDC_CAP_NOTIFY 0x08
/* "Union Functional Descriptor" from CDC spec 5.2.3.8 */
struct usb_cdc_union_desc {
__u8 bLength;