On 2014-09-16 07:15, Felipe Balbi wrote:
Hi,
On Tue, Sep 16, 2014 at 10:02:25AM +0800, Peter Chen wrote:
On Mon, Sep 15, 2014 at 12:42:27PM +0200, Andreas Larsson wrote:
The state attribute is connected to the kobj of the udc, not the gadget.
Signed-off-by: Andreas Larsson <andr...@gaisler.com>
---
drivers/usb/gadget/udc/udc-core.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/udc/udc-core.c
b/drivers/usb/gadget/udc/udc-core.c
index b0d9817..37c129a 100644
--- a/drivers/usb/gadget/udc/udc-core.c
+++ b/drivers/usb/gadget/udc/udc-core.c
@@ -109,8 +109,20 @@ EXPORT_SYMBOL_GPL(usb_gadget_unmap_request);
static void usb_gadget_state_work(struct work_struct *work)
{
struct usb_gadget *gadget = work_to_gadget(work);
+ struct usb_udc *udc = NULL;
+
+ mutex_lock(&udc_lock);
+ list_for_each_entry(udc, &udc_list, list)
+ if (udc->gadget == gadget)
+ goto found;
+ mutex_unlock(&udc_lock);
+
+ return;
+
+found:
+ mutex_unlock(&udc_lock);
- sysfs_notify(&gadget->dev.kobj, NULL, "state");
+ sysfs_notify(&udc->dev.kobj, NULL, "state");
}
void usb_gadget_set_state(struct usb_gadget *gadget,
What's the user mode difference with and without this patch?
poll() will actually wakeup ?
Yes, that is indeed the difference.
Cheers,
Andreas Larsson
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