[patch 0/5] scsi/bnx2*: Plug hotplug race, correct locking and simplify hotplug code

[Thomas Gleixner]

The conversion of the cpu hotplug locking to a percpu rwsem does not longer
allow recursive locking of the hotplug lock.

The BNX2I and BNX2FC drivers install/remove hotplug states with the hotplug
lock held. The install/removal code acquired the hotplug lock as well.

While looking into this, I noticed an interesting hotplug race in the
BNX2FC driver, which could result in dereferencing a NULL pointer or freed
and potentially reused memory.

The following series addresses these problems and as a final step on top it
simplifies the hotplug code in both drivers.

Thanks,

	tglx

----
 drivers/scsi/bnx2fc/bnx2fc_fcoe.c |   68 ++++++++------------------------------
 drivers/scsi/bnx2fc/bnx2fc_hwi.c  |   45 ++++++++++++-------------
 drivers/scsi/bnx2i/bnx2i_init.c   |   64 ++++++++---------------------------
 include/linux/cpuhotplug.h        |    2 -
 4 files changed, 53 insertions(+), 126 deletions(-)