diff options
| author | Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2022-04-22 05:22:50 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-05-05 23:03:24 +0300 |
| commit | c96683798e272366866a5c0ce3073c0b5a256db7 (patch) | |
| tree | 53ab1a3e6398753c62b577e6c734c6a12d8ff361 /drivers/usb/dwc3/ep0.c | |
| parent | 8f8034f493b5eb1ad21ff392fd30c0cf9e71f73f (diff) | |
| download | linux-c96683798e272366866a5c0ce3073c0b5a256db7.tar.xz | |
usb: dwc3: ep0: Don't prepare beyond Setup stage
Since we can't guarantee that the host won't send new Setup packet
before going through the device-initiated disconnect, don't prepare
beyond the Setup stage and keep the device in EP0_SETUP_PHASE. This
ensures that the device-initated disconnect sequence can go through
gracefully. Note that the controller won't service the End Transfer
command if it can't DMA out the Setup packet.
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/6bacec56ecabb2c6e49a09cedfcac281fdc97de0.1650593829.git.Thinh.Nguyen@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/ep0.c')
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index aa8476da222d..6615f641b34f 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -813,7 +813,7 @@ static void dwc3_ep0_inspect_setup(struct dwc3 *dwc, int ret = -EINVAL; u32 len; - if (!dwc->gadget_driver) + if (!dwc->gadget_driver || !dwc->connected) goto out; trace_dwc3_ctrl_req(ctrl); |