linux-kernel - [PATCH] usb: typec: clear usb_pd flag if change to typec only mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 30 Nov 2021 10:57:13 +0800
From:   steven_syu <steven_syu@...s.com>
To:     <heikki.krogerus@...ux.intel.com>
CC:     <gregkh@...uxfoundation.org>, <linux-usb@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, steven_syu <steven_syu@...s.com>
Subject: [PATCH] usb: typec: clear usb_pd flag if change to typec only mode

This patch handle power mode change from PD to Type-C only
and the user space unknown power delivery  was turned off
by typec driver.

Signed-off-by: steven_syu <steven_syu@...s.com>
---
 drivers/usb/typec/class.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index aeef453..11e2a98 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -1718,6 +1718,10 @@ 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;
+                       sysfs_notify(&partner_dev->kobj, NULL,
+                                    "supports_usb_power_delivery");
                }
                put_device(partner_dev);
        }
--
2.7.4

===================================================================================================================================
機密資訊 This email and any attachments to it contain confidential information and are intended solely for the use of the individual to whom it is addressed.If you are not the intended recipient or receive it accidentally, please immediately notify the sender by e-mail and delete the message and any attachments from your computer system, and destroy all hard copies. If any, please be advised that any unauthorized disclosure, copying, distribution or any action taken or omitted in reliance on this, is illegal and prohibited. Furthermore, any views or opinions expressed are solely those of the author and do not represent those of ASUSTeK. Thank you for your cooperation.
===================================================================================================================================