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Subject[PATCH 4.19 151/245] scsi: aacraid: Fix error handling paths in aac_probe_one()
Date
From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>

[ Upstream commit f7854c382240c1686900b2f098b36430c6f5047e ]

If 'scsi_host_alloc()' or 'kcalloc()' fail, 'error' is known to be 0. Set
it explicitly to -ENOMEM before branching to the error handling path.

While at it, remove 2 useless assignments to 'error'. These values are
overwridden a few lines later.

Link: https://lore.kernel.org/r/20200412094039.8822-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/aacraid/linit.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 0142547aaadd2..eecffc03084c0 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -1620,7 +1620,7 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
struct Scsi_Host *shost;
struct aac_dev *aac;
struct list_head *insert = &aac_devices;
- int error = -ENODEV;
+ int error;
int unique_id = 0;
u64 dmamask;
int mask_bits = 0;
@@ -1645,7 +1645,6 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
error = pci_enable_device(pdev);
if (error)
goto out;
- error = -ENODEV;

if (!(aac_drivers[index].quirks & AAC_QUIRK_SRC)) {
error = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
@@ -1677,8 +1676,10 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
pci_set_master(pdev);

shost = scsi_host_alloc(&aac_driver_template, sizeof(struct aac_dev));
- if (!shost)
+ if (!shost) {
+ error = -ENOMEM;
goto out_disable_pdev;
+ }

shost->irq = pdev->irq;
shost->unique_id = unique_id;
@@ -1703,8 +1704,11 @@ static int aac_probe_one(struct pci_dev *pdev, const struct pci_device_id *id)
aac->fibs = kcalloc(shost->can_queue + AAC_NUM_MGT_FIB,
sizeof(struct fib),
GFP_KERNEL);
- if (!aac->fibs)
+ if (!aac->fibs) {
+ error = -ENOMEM;
goto out_free_host;
+ }
+
spin_lock_init(&aac->fib_lock);

mutex_init(&aac->ioctl_mutex);
--
2.25.1


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