From 91626c2701acad605c434b5e8245cbeea6671382 Mon Sep 17 00:00:00 2001 From: "sumit.saxena@avagotech.com" Date: Thu, 15 Oct 2015 13:40:34 +0530 Subject: [PATCH] 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 Signed-off-by: Tomas Henzl Signed-off-by: Sumit Saxena Signed-off-by: Martin K. Petersen --- drivers/scsi/megaraid/megaraid_sas_base.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index d61e35380b0e..f9ed4ef04b80 100644 --- 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);