scsi: qla2xxx: set UNLOADING before waiting for session deletion

The purpose of the UNLOADING flag is to avoid port login procedures to
continue when a controller is in the process of shutting down.  It makes
sense to set this flag before starting session teardown.

Furthermore, use atomic test_and_set_bit() to avoid the shutdown being run
multiple times in parallel. In qla2x00_disable_board_on_pci_error(), the
test for UNLOADING is postponed until after the check for an already
disabled PCI board.

Link: https://lore.kernel.org/r/[email protected]
Fixes: 45235022da99 ("scsi: qla2xxx: Fix driver unload by shutting down chip")
Reviewed-by: Arun Easi <[email protected]>
Reviewed-by: Daniel Wagner <[email protected]>
Reviewed-by: Roman Bolshakov <[email protected]>
Reviewed-by: Himanshu Madhani <[email protected]>
Signed-off-by: Martin Wilck <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

0 files changed, 0 insertions, 0 deletions