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net: mvneta: Add missing hotplug notifier transition

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The mvneta_percpu_notifier() hotplug callback lacks handling of the
CPU_DOWN_FAILED case. That means, if CPU_DOWN_PREPARE failes, the
driver is not well configured on the CPU.

Add handling for CPU_DOWN_FAILED[_FROZEN] hotplug notifier transition
to setup the driver.

Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Anna-Maria Gleixner 2016-03-11 10:10:23 +01:00 committed by David S. Miller
parent 7c82a7b998
commit 0df83e7a6b
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/marvell/mvneta.c
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@ -3328,6 +3328,8 @@ static int mvneta_percpu_notifier(struct notifier_block *nfb,
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
case CPU_DOWN_FAILED:
case CPU_DOWN_FAILED_FROZEN:
spin_lock(&pp->lock);
/* Configuring the driver for a new CPU while the
* driver is stopping is racy, so just avoid it.