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| author |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2011-07-27 00:54:47 -0700 |
| commit | aa7eb8e78d8ecd6cd0475d86ea8385ff9cb47ece (patch) | |
| tree | 3f9e98fadd5124fb05e8f6f9b06aa23698d4f215 /include/linux/usb/composite.h | |
| parent | Input: sh_keysc - fix compile warning (diff) | |
| parent | Input: synaptics - fix reporting of min coordinates (diff) | |
| download | wireguard-linux-aa7eb8e78d8ecd6cd0475d86ea8385ff9cb47ece.tar.xz wireguard-linux-aa7eb8e78d8ecd6cd0475d86ea8385ff9cb47ece.zip | |
Merge branch 'next' into for-linus
Diffstat (limited to 'include/linux/usb/composite.h')
| -rw-r--r-- | include/linux/usb/composite.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index 882a084a8411..b78cba466d3d 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -37,6 +37,14 @@ #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> +/* + * USB function drivers should return USB_GADGET_DELAYED_STATUS if they + * wish to delay the data/status stages of the control transfer till they + * are ready. The control transfer will then be kept from completing till + * all the function drivers that requested for USB_GADGET_DELAYED_STAUS + * invoke usb_composite_setup_continue(). + */ +#define USB_GADGET_DELAYED_STATUS 0x7fff /* Impossibly large value */ struct usb_configuration; @@ -285,6 +293,7 @@ struct usb_composite_driver { extern int usb_composite_probe(struct usb_composite_driver *driver, int (*bind)(struct usb_composite_dev *cdev)); extern void usb_composite_unregister(struct usb_composite_driver *driver); +extern void usb_composite_setup_continue(struct usb_composite_dev *cdev); /** @@ -342,7 +351,12 @@ struct usb_composite_dev { */ unsigned deactivations; - /* protects at least deactivation count */ + /* the composite driver won't complete the control transfer's + * data/status stages till delayed_status is zero. + */ + int delayed_status; + + /* protects deactivations and delayed_status counts*/ spinlock_t lock; }; |