[PATCH 4.19 181/323] scsi: dc395: Fix error case unwinding

From: Greg Kroah-Hartman
Date: Wed Nov 24 2021 - 08:04:56 EST


From: Tong Zhang <ztong0001@xxxxxxxxx>

[ Upstream commit cbd9a3347c757383f3d2b50cf7cfd03eb479c481 ]

dc395x_init_one()->adapter_init() might fail. In this case, the acb is
already cleaned up by adapter_init(), no need to do that in
adapter_uninit(acb) again.

[ 1.252251] dc395x: adapter init failed
[ 1.254900] RIP: 0010:adapter_uninit+0x94/0x170 [dc395x]
[ 1.260307] Call Trace:
[ 1.260442] dc395x_init_one.cold+0x72a/0x9bb [dc395x]

Link: https://lore.kernel.org/r/20210907040702.1846409-1-ztong0001@xxxxxxxxx
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reviewed-by: Finn Thain <fthain@xxxxxxxxxxxxxx>
Signed-off-by: Tong Zhang <ztong0001@xxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/scsi/dc395x.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 3943347ec3c7c..16b9dc2fff6bd 100644
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -4805,6 +4805,7 @@ static int dc395x_init_one(struct pci_dev *dev, const struct pci_device_id *id)
/* initialise the adapter and everything we need */
if (adapter_init(acb, io_port_base, io_port_len, irq)) {
dprintkl(KERN_INFO, "adapter init failed\n");
+ acb = NULL;
goto fail;
}

--
2.33.0