From: Steven Syu <stevensyu7@gmail.com>
To: heikki.krogerus@linux.intel.com
Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org,
linux-kernel@vger.kernel.org, Steven Syu <stevensyu7@gmail.com>
Subject: [PATCH v2] usb: typec: clear usb_pd flag if change to typec only mode
Date: Thu, 2 Dec 2021 15:43:12 +0800 [thread overview]
Message-ID: <1638430992-15976-1-git-send-email-stevensyu7@gmail.com> (raw)
Set usb_pd to 0 when power operation mode
leaving power delivery. That can avoid user-sepace
read "yes" form the supports_usb_power_delivery_show() attribute
but power operation mode already change form power delivery to
others mode.
Signed-off-by: Steven Syu <stevensyu7@gmail.com>
---
drivers/usb/typec/class.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index aeef453..2043e07 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -1718,6 +1718,8 @@ void typec_set_pwr_opmode(struct typec_port *port,
partner->usb_pd = 1;
sysfs_notify(&partner_dev->kobj, NULL,
"supports_usb_power_delivery");
+ } else if (opmode != TYPEC_PWR_MODE_PD && partner->usb_pd) {
+ partner->usb_pd = 0;
}
put_device(partner_dev);
}
--
2.7.4
next reply other threads:[~2021-12-02 7:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-02 7:43 Steven Syu [this message]
2021-12-02 7:57 ` [PATCH v2] usb: typec: clear usb_pd flag if change to typec only mode Greg KH
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