diff options
| author | Peter Chen <peter.chen@nxp.com> | 2020-02-19 17:25:48 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@nxp.com> | 2020-03-16 11:13:47 +0800 |
| commit | 3ac82cf3f80c2ddc1964408a213f84ac538875dc (patch) | |
| tree | 2b3dcba2f9effefae9fd1b2326bcc1898dfad7ef /drivers/usb/chipidea | |
| parent | 7fd87c956c0ab5633f20597cb828713f9c03aa5b (diff) | |
| download | lwn-3ac82cf3f80c2ddc1964408a213f84ac538875dc.tar.gz lwn-3ac82cf3f80c2ddc1964408a213f84ac538875dc.zip | |
usb: chipidea: otg: handling vbus disconnect event occurred during system suspend
During system suspend, the role switch may occur, eg, from gadget->host.
In this case, the vbus disconnect event is lost, we add this handling
in role switch routine in this commit.
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Diffstat (limited to 'drivers/usb/chipidea')
| -rw-r--r-- | drivers/usb/chipidea/otg.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/otg.c b/drivers/usb/chipidea/otg.c index fbfb02e05c97..be63924ea82e 100644 --- a/drivers/usb/chipidea/otg.c +++ b/drivers/usb/chipidea/otg.c @@ -170,6 +170,13 @@ static void ci_handle_id_switch(struct ci_hdrc *ci) dev_dbg(ci->dev, "switching from %s to %s\n", ci_role(ci)->name, ci->roles[role]->name); + if (ci->vbus_active && ci->role == CI_ROLE_GADGET) + /* + * vbus disconnect event is lost due to role + * switch occurs during system suspend. + */ + usb_gadget_vbus_disconnect(&ci->gadget); + ci_role_stop(ci); if (role == CI_ROLE_GADGET && |