[PATCH AUTOSEL 4.9 03/34] scsi: vmw_pscsi: Rearrange code to avoid multiple calls to free_irq during unload

Sasha Levin
2018-12-13T04:41:28Z

From: Cathy Avery <cavery@redhat.com>

[ Upstream commit 02f425f811cefcc4d325d7a72272651e622dc97e ]

Currently pvscsi_remove calls free_irq more than once as
pvscsi_release_resources and __pvscsi_shutdown both call
pvscsi_shutdown_intr. This results in a 'Trying to free already-free IRQ'
warning and stack trace. To solve the problem pvscsi_shutdown_intr has been
moved out of pvscsi_release_resources.

Signed-off-by: Cathy Avery <cavery@redhat.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/vmw_pvscsi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/vmw_pvscsi.c b/drivers/scsi/vmw_pvscsi.c
index 874e9f085326..fcfbe2dcd025 100644
--- a/drivers/scsi/vmw_pvscsi.c
+++ b/drivers/scsi/vmw_pvscsi.c
@@ -1233,8 +1233,6 @@ static void pvscsi_shutdown_intr(struct pvscsi_adapter *adapter)

static void pvscsi_release_resources(struct pvscsi_adapter *adapter)
{
- pvscsi_shutdown_intr(adapter);
-
if (adapter->workqueue)
destroy_workqueue(adapter->workqueue);

@@ -1563,6 +1561,7 @@ static int pvscsi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
out_reset_adapter:
ll_adapter_reset(adapter);
out_release_resources:
+ pvscsi_shutdown_intr(adapter);
pvscsi_release_resources(adapter);
scsi_host_put(host);
out_disable_device:
@@ -1571,6 +1570,7 @@ static int pvscsi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return error;

out_release_resources_and_disable:
+ pvscsi_shutdown_intr(adapter);
pvscsi_release_resources(adapter);
goto out_disable_device;
}
--
2.19.1