Currently linux HID gadgets do not support remote wakeup (the ability
to wake up a host from suspend). This is an important feature for
gadgets that want to properly emulate the normal operation of a mouse
and keyboard. Ultimately, This feature has to be enabled/supported by
the underlying UDC driver to have any impact.
Signed-off-by: Abdulhadi Mohamed <abdulahhadi2@xxxxxxxxx>
---
drivers/usb/gadget/function/f_hid.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/gadget/function/f_hid.c b/drivers/usb/gadget/function/f_hid.c
index c60b882..eeb01bd 100644
--- a/drivers/usb/gadget/function/f_hid.c
+++ b/drivers/usb/gadget/function/f_hid.c
@@ -339,6 +339,7 @@ static ssize_t f_hidg_write(struct file *file, const char __user *buffer,
size_t count, loff_t *offp)
{
struct f_hidg *hidg = file->private_data;
+ struct usb_composite_dev *cdev = hidg->func.config->cdev;
struct usb_request *req;
unsigned long flags;
ssize_t status = -ENOMEM;
@@ -346,6 +347,7 @@ static ssize_t f_hidg_write(struct file *file, const char __user *buffer,
if (!access_ok(VERIFY_READ, buffer, count))
return -EFAULT;
+ usb_gadget_wakeup(cdev->gadget);
spin_lock_irqsave(&hidg->write_spinlock, flags);
#define WRITE_COND (!hidg->write_pending)
--
2.9.3
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