2/2] net: xilinx_emaclite: use readx_poll_timeout() in mdio wait function

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

xemaclite_mdio_wait():
  xemaclite_readl() -> 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 takes 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>

...

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Kurt Kanzenbach 2019-05-19 19:59:37 +02:00 • committed by David S. Miller

parent 882119ff96

commit 563ecb8a3c

1 changed files with 6 additions and 10 deletions

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drivers/net/ethernet/xilinx/xilinx_emaclite.c

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