scsi: dc395: Fix error case unwinding

[ 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@gmail.com
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reviewed-by: Finn Thain <fthain@linux-m68k.org>
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c
index 830b2d2dcf20606f31b94f91fc9e2f55a0c6afae..8490d0ff04ca7f7d7deacb1ab0ca3acd29391c0a 100644 (file)
--- a/drivers/scsi/dc395x.c
+++ b/drivers/scsi/dc395x.c
@@ -4809,6 +4809,7 @@ 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;
        }