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usb: device: Add usb_transfer_is_busy() function

Add usb_transfer_is_busy() function to check if there is ongoing
transfer.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
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finikorg authored and nashif committed Apr 17, 2019
1 parent cc1b2c7 commit 2c672b92c805c7cf92df728831f73d2d5e83e21c
Showing with 21 additions and 0 deletions.
  1. +10 −0 include/usb/usb_device.h
  2. +11 −0 subsys/usb/usb_device.c
@@ -418,6 +418,16 @@ int usb_transfer_sync(u8_t ep, u8_t *data, size_t dlen, unsigned int flags);
*/
void usb_cancel_transfer(u8_t ep);

/**
* @brief Check that transfer is ongoing for the endpoint
*
* @param[in] ep Endpoint address corresponding to the one
* listed in the device configuration table
*
* @return true if transfer is ongoing, false otherwise.
*/
bool usb_transfer_is_busy(u8_t ep);

/**
* @brief Start the USB remote wakeup procedure
*
@@ -1194,6 +1194,17 @@ static struct usb_transfer_data *usb_ep_get_transfer(u8_t ep)
return NULL;
}

bool usb_transfer_is_busy(u8_t ep)
{
struct usb_transfer_data *trans = usb_ep_get_transfer(ep);

if (trans && trans->status == -EBUSY) {
return true;
}

return false;
}

static void usb_transfer_work(struct k_work *item)
{
struct usb_transfer_data *trans;

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