sh_eth: fix invalid context bug while calling auto-negotiation by ethtool

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Since commit 35b5f6b1a8 ("PHYLIB: Locking fixes for PHY I/O
potentially sleeping") phy_start_aneg() function utilizes a mutex
to serialize changes to phy state, however the helper function is
called in atomic context.

The bug can be reproduced by running "ethtool -r" command, the bug
is reported if CONFIG_DEBUG_ATOMIC_SLEEP build option is enabled.

Fixes: dc19e4e5e0 ("sh: sh_eth: Add support ethtool")
Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Vladimir Zapolskiy 2018-07-04 11:12:39 +03:00 • committed by David S. Miller

parent 70ba5b6db9

commit 53a710b504

1 changed files with 1 additions and 9 deletions

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drivers/net/ethernet/renesas/sh_eth.c

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