From: Hao Wu <hao.wu@xxxxxxxxx>
This patch modifies the composite gadget to set vbus_draw current limitation
during suspend state. This current limitation in suspend state shouldn't be
more than 2.5mA
Signed-off-by: Hao Wu <hao.wu@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/usb/gadget/composite.c | 8 ++++++++
1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index d3493fe..21dc0da 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1188,6 +1188,8 @@ composite_suspend(struct usb_gadget *gadget)
composite->suspend(cdev);
cdev->suspended = 1;
+
+ usb_gadget_vbus_draw(gadget, 2);
}
static void
@@ -1195,6 +1197,7 @@ composite_resume(struct usb_gadget *gadget)
{
struct usb_composite_dev *cdev = get_gadget_data(gadget);
struct usb_function *f;
+ u8 maxpower;
/* REVISIT: should we have config level
* suspend/resume callbacks?
@@ -1207,6 +1210,11 @@ composite_resume(struct usb_gadget *gadget)
if (f->resume)
f->resume(f);
}
+
+ maxpower = cdev->config->bMaxPower;
+
+ usb_gadget_vbus_draw(gadget, maxpower ?
+ (2 * maxpower) : CONFIG_USB_GADGET_VBUS_DRAW);
}
cdev->suspended = 0;
--
1.7.3.2
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