From eede236112b7ea4d9a7c2f2af2ac6648699b88f3 Mon Sep 17 00:00:00 2001 From: Vivien Didelot Date: Fri, 9 Aug 2019 18:47:59 -0400 Subject: [PATCH] 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 Signed-off-by: David S. Miller --- 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;