megaraid_sas: Initialize tasklet before setting up IRQs

It may happen (kdump), that an interrupt is invoked just after the
setup_irqs function was called but before the tasklet was initialised.
At this phase the hw ints should have been disabled, but for unknown
reason this mechanism seems to not work properly.

From: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index d61e35380b0e162186fcac30a4d851618dc8c02e..f9ed4ef04b80515999c90387d15be2b8ce4827b1 100644 (file)
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -4745,6 +4745,9 @@ static int megasas_init_fw(struct megasas_instance *instance)
                "current msix/online cpus\t: (%d/%d)\n",
                instance->msix_vectors, (unsigned int)num_online_cpus());
 
+       tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
+               (unsigned long)instance);
+
        if (instance->msix_vectors ?
                megasas_setup_irqs_msix(instance, 1) :
                megasas_setup_irqs_ioapic(instance))
@@ -4765,8 +4768,6 @@ static int megasas_init_fw(struct megasas_instance *instance)
        if (instance->instancet->init_adapter(instance))
                goto fail_init_adapter;
 
-       tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
-               (unsigned long)instance);
 
        instance->instancet->enable_intr(instance);