Commit 0df83e7a authored Mar 11, 2016 by Anna-Maria Gleixner Committed by David S. Miller Mar 14, 2016

net: mvneta: Add missing hotplug notifier transition



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>

parent 7c82a7b9

drivers/net/ethernet/marvell/mvneta.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -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.