1/2] net: axienet: use readx_poll_timeout() in mdio wait function
authorKurt Kanzenbach <kurt@linutronix.de>
Sun, 19 May 2019 17:59:36 +0000 (19:59 +0200)
committerDavid S. Miller <davem@davemloft.net>
Tue, 21 May 2019 00:00:46 +0000 (20:00 -0400)
commit882119ff969da4ec308d1161c78d22bc9b4a1f01
treec9f84cd837e2b3aa08d7142dbb272cc1d76466c5
parentfa2c52be7129c7370e6089a8162c7119a78b9a1c
1/2] net: axienet: use readx_poll_timeout() in mdio wait function

On loaded systems with a preemptible kernel the mdio_wait() function may
report an error while everything is working fine:

axienet_mdio_wait_until_ready():
  axienet_ior() -> chip not ready
  --> interrupt here (other work for some time / chip become ready)
  if (time_before_eq(end, jiffies))
    --> false positive error report

Replace the current code with readx_poll_timeout() which take care
of the situation.

Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Signed-off-by: Benedikt Spranger <b.spranger@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/xilinx/xilinx_axienet.h
drivers/net/ethernet/xilinx/xilinx_axienet_mdio.c