[PATCH 4.18 103/158] scsi: 3ware: fix return 0 on the error path of probe

[Greg Kroah-Hartman]

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Anton Vasilyev <vasil...@ispras.ru>

[ Upstream commit 4dc98c1995482262e70e83ef029135247fafe0f2 ]

tw_probe() returns 0 in case of fail of tw_initialize_device_extension(),
pci_resource_start() or tw_reset_sequence() and releases resources.
twl_probe() returns 0 in case of fail of twl_initialize_device_extension(),
pci_iomap() and twl_reset_sequence().  twa_probe() returns 0 in case of
fail of tw_initialize_device_extension(), ioremap() and
twa_reset_sequence().

The patch adds retval initialization for these cases.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Anton Vasilyev <vasil...@ispras.ru>
Acked-by: Adam Radford <aradf...@gmail.com>
Signed-off-by: Martin K. Petersen <martin.peter...@oracle.com>
Signed-off-by: Sasha Levin <alexander.le...@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/scsi/3w-9xxx.c |    6 +++++-
 drivers/scsi/3w-sas.c  |    3 +++
 drivers/scsi/3w-xxxx.c |    2 ++
 3 files changed, 10 insertions(+), 1 deletion(-)

--- a/drivers/scsi/3w-9xxx.c
+++ b/drivers/scsi/3w-9xxx.c
@@ -2038,6 +2038,7 @@ static int twa_probe(struct pci_dev *pde
 
        if (twa_initialize_device_extension(tw_dev)) {
                TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize 
device extension");
+               retval = -ENOMEM;
                goto out_free_device_extension;
        }
 
@@ -2060,6 +2061,7 @@ static int twa_probe(struct pci_dev *pde
        tw_dev->base_addr = ioremap(mem_addr, mem_len);
        if (!tw_dev->base_addr) {
                TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap");
+               retval = -ENOMEM;
                goto out_release_mem_region;
        }
 
@@ -2067,8 +2069,10 @@ static int twa_probe(struct pci_dev *pde
        TW_DISABLE_INTERRUPTS(tw_dev);
 
        /* Initialize the card */
-       if (twa_reset_sequence(tw_dev, 0))
+       if (twa_reset_sequence(tw_dev, 0)) {
+               retval = -ENOMEM;
                goto out_iounmap;
+       }
 
        /* Set host specific parameters */
        if ((pdev->device == PCI_DEVICE_ID_3WARE_9650SE) ||
--- a/drivers/scsi/3w-sas.c
+++ b/drivers/scsi/3w-sas.c
@@ -1594,6 +1594,7 @@ static int twl_probe(struct pci_dev *pde
 
        if (twl_initialize_device_extension(tw_dev)) {
                TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Failed to initialize 
device extension");
+               retval = -ENOMEM;
                goto out_free_device_extension;
        }
 
@@ -1608,6 +1609,7 @@ static int twl_probe(struct pci_dev *pde
        tw_dev->base_addr = pci_iomap(pdev, 1, 0);
        if (!tw_dev->base_addr) {
                TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to ioremap");
+               retval = -ENOMEM;
                goto out_release_mem_region;
        }
 
@@ -1617,6 +1619,7 @@ static int twl_probe(struct pci_dev *pde
        /* Initialize the card */
        if (twl_reset_sequence(tw_dev, 0)) {
                TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Controller reset 
failed during probe");
+               retval = -ENOMEM;
                goto out_iounmap;
        }
 
--- a/drivers/scsi/3w-xxxx.c
+++ b/drivers/scsi/3w-xxxx.c
@@ -2280,6 +2280,7 @@ static int tw_probe(struct pci_dev *pdev
 
        if (tw_initialize_device_extension(tw_dev)) {
                printk(KERN_WARNING "3w-xxxx: Failed to initialize device 
extension.");
+               retval = -ENOMEM;
                goto out_free_device_extension;
        }
 
@@ -2294,6 +2295,7 @@ static int tw_probe(struct pci_dev *pdev
        tw_dev->base_addr = pci_resource_start(pdev, 0);
        if (!tw_dev->base_addr) {
                printk(KERN_WARNING "3w-xxxx: Failed to get io address.");
+               retval = -ENOMEM;
                goto out_release_mem_region;
        }