netdev - [PATCH net-next 7/7] net: dsa: mv88e6xxx: add delay in direct SMI wait

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 for Android: free password hash cracker in your pocket

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

Date:   Fri,  9 Aug 2019 18:47:59 -0400
From:   Vivien Didelot <vivien.didelot@...il.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, f.fainelli@...il.com, andrew@...n.ch,
        Vivien Didelot <vivien.didelot@...il.com>
Subject: [PATCH net-next 7/7] net: dsa: mv88e6xxx: add delay in direct SMI wait

The mv88e6xxx_smi_direct_wait routine is used to wait on indirect
registers access. It is of no exception and must delay between read
attempts, like other wait routines.

Signed-off-by: Vivien Didelot <vivien.didelot@...il.com>
---
 drivers/net/dsa/mv88e6xxx/smi.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/smi.c b/drivers/net/dsa/mv88e6xxx/smi.c
index 18e87a5a20a3..282fe08db050 100644
--- a/drivers/net/dsa/mv88e6xxx/smi.c
+++ b/drivers/net/dsa/mv88e6xxx/smi.c
@@ -66,6 +66,8 @@ static int mv88e6xxx_smi_direct_wait(struct mv88e6xxx_chip *chip,
 
 		if (!!(data & BIT(bit)) == !!val)
 			return 0;
+
+		usleep_range(1000, 2000);
 	}
 
 	return -ETIMEDOUT;
-- 
2.22.0