usb: gadget: udc: renesas_usb3: Fix b-device mode for "workaround"
authorYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tue, 2 Oct 2018 11:57:44 +0000 (20:57 +0900)
committerFelipe Balbi <felipe.balbi@linux.intel.com>
Tue, 2 Oct 2018 12:16:52 +0000 (15:16 +0300)
commitafc92514a34c7414b28047b1205a6b709103c699
tree89b77dcae3ad98f69ceda24552a38f114bcb5224
parent187c5298a12292eab55e3eb09e70e2b145646bcc
usb: gadget: udc: renesas_usb3: Fix b-device mode for "workaround"

If the "workaround_for_vbus" is true, the driver will not call
usb_disconnect(). So, since the controller keeps some registers'
value, the driver doesn't re-enumarate suitable speed after
the b-device mode is disabled. To fix the issue, this patch
adds usb_disconnect() calling in renesas_usb3_b_device_write()
if workaround_for_vbus is true.

Fixes: 43ba968b00ea ("usb: gadget: udc: renesas_usb3: add debugfs to set the b-device mode")
Cc: <stable@vger.kernel.org> # v4.14+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
drivers/usb/gadget/udc/renesas_usb3.c