> -----Original Message-----
> From: Tomas Henzl [mailto:the...@redhat.com]
> Sent: Monday, February 06, 2017 9:35 PM
> To: Shivasharan S; linux-scsi@vger.kernel.org
> Cc: martin.peter...@oracle.com; j...@linux.vnet.ibm.com;
> kashyap.de...@broadcom.com; sumit.sax...@broadcom.com;
> h...@suse.com
> Subject: Re: [PATCH 33/39] megaraid_sas: call flush_scheduled_work
during
> controller shutdown/detach
>
> On 6.2.2017 11:00, Shivasharan S wrote:
> > Signed-off-by: Kashyap Desai <kashyap.de...@broadcom.com>
> > Signed-off-by: Shivasharan S
> <shivasharan.srikanteshw...@broadcom.com>
> > ---
> > drivers/scsi/megaraid/megaraid_sas_base.c | 2 ++
> > 1 file changed, 2 insertions(+)
> >
> > diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c
> b/drivers/scsi/megaraid/megaraid_sas_base.c
> > index 04ef0a0..b29cfd3 100644
> > --- a/drivers/scsi/megaraid/megaraid_sas_base.c
> > +++ b/drivers/scsi/megaraid/megaraid_sas_base.c
> > @@ -6393,6 +6393,7 @@ megasas_suspend(struct pci_dev *pdev,
> pm_message_t state)
> > if (instance->ev != NULL) {
> > struct megasas_aen_event *ev = instance->ev;
> > cancel_delayed_work_sync(&ev->hotplug_work);
> > + flush_scheduled_work();
> > instance->ev = NULL;
> > }
> >
> > @@ -6619,6 +6620,7 @@ static void megasas_detach_one(struct pci_dev
> *pdev)
> > if (instance->ev != NULL) {
> > struct megasas_aen_event *ev = instance->ev;
> > cancel_delayed_work_sync(&ev->hotplug_work);
> > + flush_scheduled_work();
> > instance->ev = NULL;
> > }
> >
>
> Why is cancel_delayed_work_sync not good enough?
Megaraid_sas driver use certain work on global work queue.
Below are the listed one -
if (instance->ctrl_context) {
INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
INIT_WORK(&instance->crash_init,
megasas_fusion_crash_dump_wq);
}
else
INIT_WORK(&instance->work_init,
process_fw_state_change_wq)
Cancel_delayed_work_sync() was mainly targeted for only hotplug AEN work.
Calling flush_scheduled_work() we want above listed work to be completed
as well.
>
> tomash
