On systems with shared interrupts the interrupt routine might be called as soon as the interrupt is enabled. As this might happen before pci_set_drvdata() is called the system would crash.
Reported-by: Andreas Brogle <[email protected]> Tested-by: Andreas Brogle <[email protected]> Signed-off-by: Hannes Reinecke <[email protected]> --- drivers/scsi/am53c974.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/am53c974.c b/drivers/scsi/am53c974.c index a6f5ee8..beea30e 100644 --- a/drivers/scsi/am53c974.c +++ b/drivers/scsi/am53c974.c @@ -476,6 +476,8 @@ static int pci_esp_probe_one(struct pci_dev *pdev, goto fail_unmap_regs; } + pci_set_drvdata(pdev, pep); + err = request_irq(pdev->irq, scsi_esp_intr, IRQF_SHARED, DRV_MODULE_NAME, esp); if (err < 0) { @@ -496,8 +498,6 @@ static int pci_esp_probe_one(struct pci_dev *pdev, /* Assume 40MHz clock */ esp->cfreq = 40000000; - pci_set_drvdata(pdev, pep); - err = scsi_esp_register(esp, &pdev->dev); if (err) goto fail_free_irq; @@ -507,6 +507,7 @@ static int pci_esp_probe_one(struct pci_dev *pdev, fail_free_irq: free_irq(pdev->irq, esp); fail_unmap_command_block: + pci_set_drvdata(pdev, NULL); pci_free_consistent(pdev, 16, esp->command_block, esp->command_block_dma); fail_unmap_regs: @@ -530,6 +531,7 @@ static void pci_esp_remove_one(struct pci_dev *pdev) scsi_esp_unregister(esp); free_irq(pdev->irq, esp); + pci_set_drvdata(pdev, NULL); pci_free_consistent(pdev, 16, esp->command_block, esp->command_block_dma); pci_iounmap(pdev, esp->regs); -- 1.8.5.2 -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
