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(-)
