[PATCH 2/2] scsi: aic79xx: Disable PCI on configuration failure

[Myeonghun Pak]

ahd_linux_pci_dev_probe() enables the PCI device before calling
ahd_pci_config(). If configuration fails, ahd_free() releases the
controller resources but leaves the PCI enable reference outstanding.
The remove callback is not called for a failed probe.

Disable the PCI device after ahd_free() on this error path. The
imbalance already exists in the initial Git import.

This issue was identified during our ongoing static-analysis research
while reviewing kernel code.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@xxxxxxxxxxxxxxx
Assisted-by: LLM
Co-developed-by: Ijae Kim <ae878000@xxxxxxxxx>
Signed-off-by: Ijae Kim <ae878000@xxxxxxxxx>
Signed-off-by: Myeonghun Pak <mhun512@xxxxxxxxx>
---
 drivers/scsi/aic7xxx/aic79xx_osm_pci.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
index 5fba316..37f4395 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm_pci.c
@@ -189,6 +189,7 @@ ahd_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	error = ahd_pci_config(ahd, entry);
 	if (error != 0) {
 		ahd_free(ahd);
+		pci_disable_device(pdev);
 		return (-error);
 	}