net: stmmac: fix system hang if change mac address after interface ifdown

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Fix system hang with below sequences:
~# ifconfig ethx down
~# ifconfig ethx hw ether xx:xx:xx:xx:xx:xx

After ethx down, stmmac all clocks gated off and then register access causes
system hang.

Fixes: 5ec5582343 ("net: stmmac: add clocks management for gmac driver")
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Joakim Zhang 2021-05-20 20:51:17 +08:00 • committed by David S. Miller

parent b3dcb31277

commit 4691ffb18a

1 changed files with 10 additions and 1 deletions

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11

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

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