diff options
| author | Hannes Reinecke <hare@suse.de> | 2015-03-27 14:31:12 +0100 |
|---|---|---|
| committer | James Bottomley <JBottomley@Odin.com> | 2015-04-17 19:13:56 +0200 |
| commit | 8041708ed4d993c5466c20926210598afa97194e (patch) | |
| tree | d217c200e75c8acbc09765159038a000d7c2307c /drivers/scsi/am53c974.c | |
| parent | megaraid_sas: use raw_smp_processor_id() (diff) | |
| download | linux-8041708ed4d993c5466c20926210598afa97194e.tar.xz linux-8041708ed4d993c5466c20926210598afa97194e.zip | |
am53c974: Fix crash during modprobe
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 <anbro@ok.de>
Tested-by: Andreas Brogle <anbro@ok.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
Diffstat (limited to 'drivers/scsi/am53c974.c')
| -rw-r--r-- | drivers/scsi/am53c974.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/scsi/am53c974.c b/drivers/scsi/am53c974.c index a6f5ee80fadc..beea30e5a34a 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); |