stmmac: do not sleep in atomic context for mdio_reset

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stmmac_mdio_reset() has been updated to use msleep rather udelay
(as some PHY requires a one second delay there).
It called from stmmac_resume() within the spin_lock_irqsave block
atomic context triggering 'scheduling while atomic'.

The stmmac_priv lock usage is not fully documented, but it seems
to protect the access to the MAC registers / DMA structures rather
than the MDIO bus or the PHY (which have separate locking),
so we can push the spin_lock after the stmmac_mdio_reset call.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Vincent Palatin 2016-06-01 08:53:48 -07:00 • committed by David S. Miller

parent 14b84e8654

commit f55d84b07c

1 changed files with 4 additions and 2 deletions

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

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