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USB Gadget: Verify VBUS current before setting the device self-powered bit

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Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Praveena Nadahally <praveen.nadahally@stericsson.com>
Signed-off-by: Parirajan Muthalagu <parirajan.muthalagu@stericsson.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Parirajan Muthalagu 2010-08-25 16:33:26 +05:30 • committed by Greg Kroah-Hartman
parent 90593899de
commit 37b5801e16
2 changed files with 17 additions and 1 deletions
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10
include/linux/usb/ch9.h
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@ -808,4 +808,14 @@ enum usb_device_state {
*/
};
/*-------------------------------------------------------------------------*/
/*
* As per USB compliance update, a device that is actively drawing
* more than 100mA from USB must report itself as bus-powered in
* the GetStatus(DEVICE) call.
* http://compliance.usb.org/index.asp?UpdateFile=Electrical&Format=Standard#34
*/
#define USB_SELF_POWER_VBUS_MAX_DRAW 100
#endif /* __LINUX_USB_CH9_H */