Re: PCI driver

[Rolf Eike Beer <eike-kernel@sf-tec.de>]

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Antonino A. Daplas wrote:
>Manu Abraham wrote:
>> Ralph Metzler wrote:
>>
>>
>>                SA_INTERRUPT, DRIVER_NAME, mantis) < 0) {
>>        dprintk(verbose, MANTIS_ERROR, 1, "Mantis IRQ reg failed");
>>        goto err2;
>>    }
>>    dprintk(verbose, MANTIS_DEBUG, 1, "We got an IRQ");
>>    dprintk(verbose, MANTIS_DEBUG, 1, "We finally enabled the device");
>>    pci_set_master(pdev);
>>    pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &latency);
>>    pci_read_config_byte(pdev, PCI_CLASS_REVISION, &revision);
>>    mantis->latency = latency;
>>    mantis->revision = revision;
>>    if (!latency) {
>>        pci_write_config_byte(pdev, PCI_LATENCY_TIMER, 32);
>>    }
>>    pci_set_drvdata(pdev, mantis);      dprintk(verbose, MANTIS_ERROR, 0,
>> "Mantis Rev %d, ", mantis->revision);
>>    dprintk(verbose, MANTIS_ERROR, 0, "irq: %d, latency: %d\n \
>>        memory: 0x%04x, mmio: %p\n", pdev->irq, mantis->latency,    \
>>        mantis->mantis_addr, mantis->mantis_mmio);
>
>Success!  So don't enter the failure path, return 0 here.
>
>>   err2:
>>    if (mantis->mantis_mmio)
>>        iounmap(mantis->mantis_mmio);
>> err1:
>>    release_mem_region(pci_resource_start(pdev, 0),
>>                pci_resource_len(pdev, 0));
>> err0:
>>    kfree(mantis);
>> err:
>>    return 0;
>
>This is your failure path, return nonzero here, preferable describing the
>error condition.

Hey Tony, you get a penalty for not using PGP. If you had used it my mail 
would not have been sent 7 seconds after yours :))

Eike

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