linux/drivers/scsi/mpt2sas
Kashyap, Desai 1278b11f46 [SCSI] mpt2sas : Device removal algorithm in interrupt context only
external host not connecting after controller reboot: The
problem is : devices are not coming back after having the cable
disconnected then reconnected. The problem is because the
driver/firmware device removal handshake is failing. Due to this failure,
the controller firmware is not sending out device add events when the target
is reconnected. This is root caused to a race in the driver/firmware device
removal algorithm. There is duplicate code in both interrupt and user
context; where target reset is being issue from user context path while
sas_iounit_control(OP_REMOVE) is being sent from interrupt context. An
active target_reset will fail the OP_REMOVE. To fix this problem, the
duplicate code has been removed from user context path.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
2010-04-11 09:23:29 -05:00
..
mpi [SCSI] mpt2sas: Update driver header to latest MPI Spec. 2010-02-08 18:19:44 -06:00
Kconfig [SCSI] mpt2sas: Added raid transport support 2010-02-08 18:19:41 -06:00
Makefile
mpt2sas_base.c [SCSI] mpt2sas: RESCAN Barrier work is added in case of HBA reset. 2010-04-11 09:23:27 -05:00
mpt2sas_base.h [SCSI] mpt2sas : Device removal algorithm in interrupt context only 2010-04-11 09:23:29 -05:00
mpt2sas_config.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mpt2sas_ctl.c [SCSI] mpt2sas: Use compat_ptr to setup the pointer compatibility. 2010-02-08 18:19:40 -06:00
mpt2sas_ctl.h [SCSI] mpt2sas: Add Extended Type for Diagnostic Buffer support 2009-10-29 13:03:11 -04:00
mpt2sas_debug.h [SCSI] mpt2sas: Copyright change to 2009. 2009-10-02 09:48:15 -05:00
mpt2sas_scsih.c [SCSI] mpt2sas : Device removal algorithm in interrupt context only 2010-04-11 09:23:29 -05:00
mpt2sas_transport.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00