linux-kernel - [PATCH 2/2] usb: typec: tcpm: Error handling for tcpm_register_partner

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

Date:   Tue, 14 Jul 2020 11:34:53 +0800
From:   Kyle Tso <kyletso@...gle.com>
To:     linux@...ck-us.net, heikki.krogerus@...ux.intel.com,
        gregkh@...uxfoundation.org
Cc:     badhri@...gle.com, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, Kyle Tso <kyletso@...gle.com>
Subject: [PATCH 2/2] usb: typec: tcpm: Error handling for tcpm_register_partner_altmodes

typec_partner_register_altmode returns ERR_PTR. Reset the pointer
altmode to NULL on failure.

Signed-off-by: Kyle Tso <kyletso@...gle.com>
---
 drivers/usb/typec/tcpm/tcpm.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index 82b19ebd7838..a6d4b03ec250 100644
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -1061,9 +1061,11 @@ static void tcpm_register_partner_altmodes(struct tcpm_port *port)
 	for (i = 0; i < modep->altmodes; i++) {
 		altmode = typec_partner_register_altmode(port->partner,
 						&modep->altmode_desc[i]);
-		if (!altmode)
+		if (IS_ERR(altmode)) {
 			tcpm_log(port, "Failed to register partner SVID 0x%04x",
 				 modep->altmode_desc[i].svid);
+			altmode = NULL;
+		}
 		port->partner_altmode[i] = altmode;
 	}
 }
-- 
2.27.0.389.gc38d7665816-goog