diff options
| author | Peter Chen <peter.chen@nxp.com> | 2020-09-01 05:33:52 +0300 |
|---|---|---|
| committer | Felipe Balbi <balbi@kernel.org> | 2020-10-02 09:57:40 +0300 |
| commit | b21cf9371c2e659dbd0b7099b936b67f424fb555 (patch) | |
| tree | 9814d11b1f539e38d0e7a1527a9d69e3764785a3 /drivers/usb/cdns3/ep0.c | |
| parent | 9f650135945fb5dba6bd6340ce834570fe0686f2 (diff) | |
| download | linux-b21cf9371c2e659dbd0b7099b936b67f424fb555.tar.xz | |
usb: cdns3: gadget: move wait configuration operation
After commit f4cfe5ce607d ("usb: cdns3: gadget: improve the
set_configuration handling"), the software will inform the
hardware the request has finished at cdns3_ep0_complete_setup.
The configuration set bit is only set after request has finished,
so it needs to move waiting operation after that. Meanwhile,
if it is timeout, it will show warning message and return error.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Diffstat (limited to 'drivers/usb/cdns3/ep0.c')
| -rw-r--r-- | drivers/usb/cdns3/ep0.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/cdns3/ep0.c b/drivers/usb/cdns3/ep0.c index d9779abc65b2..4761c852d9c4 100644 --- a/drivers/usb/cdns3/ep0.c +++ b/drivers/usb/cdns3/ep0.c @@ -717,9 +717,17 @@ static int cdns3_gadget_ep0_queue(struct usb_ep *ep, /* send STATUS stage. Should be called only for SET_CONFIGURATION */ if (priv_dev->ep0_stage == CDNS3_STATUS_STAGE) { + u32 val; + cdns3_select_ep(priv_dev, 0x00); cdns3_set_hw_configuration(priv_dev); cdns3_ep0_complete_setup(priv_dev, 0, 1); + /* wait until configuration set */ + ret = readl_poll_timeout_atomic(&priv_dev->regs->usb_sts, val, + val & USB_STS_CFGSTS_MASK, 1, 100); + if (ret == -ETIMEDOUT) + dev_warn(priv_dev->dev, "timeout for waiting configuration set\n"); + request->actual = 0; priv_dev->status_completion_no_call = true; priv_dev->pending_status_request = request; @@ -731,7 +739,7 @@ static int cdns3_gadget_ep0_queue(struct usb_ep *ep, * ep0_queue is back. */ queue_work(system_freezable_wq, &priv_dev->pending_status_wq); - return 0; + return ret; } if (!list_empty(&priv_ep->pending_req_list)) { |