qlcnic: Fix CPU soft lockup while collecting firmware dump
authorManish Chopra <manishc@marvell.com>
Wed, 22 Jan 2020 09:43:38 +0000 (01:43 -0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 5 Feb 2020 14:43:52 +0000 (14:43 +0000)
commit7c5d75c9e05cc32e1ef7551711b52828011eb9ac
treebb97affe5463bf276642d61767c926b0b46cb0ab
parentc32492c3d6850421a4095b55c2e9867186b9fc23
qlcnic: Fix CPU soft lockup while collecting firmware dump

[ Upstream commit 22e984493a41bf8081f13d9ed84def3ca8cfd427 ]

Driver while collecting firmware dump takes longer time to
collect/process some of the firmware dump entries/memories.
Bigger capture masks makes it worse as it results in larger
amount of data being collected and results in CPU soft lockup.
Place cond_resched() in some of the driver flows that are
expectedly time consuming to relinquish the CPU to avoid CPU
soft lockup panic.

Signed-off-by: Shahed Shaikh <shshaikh@marvell.com>
Tested-by: Yonggen Xu <Yonggen.Xu@dell.com>
Signed-off-by: Manish Chopra <manishc@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c