diff options
| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-01-03 17:22:28 +0000 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2008-01-10 16:52:51 -0500 |
| commit | 277d72a37431d200727189693b14488368b7c258 (patch) | |
| tree | 40284a8d0ab950034bf85525f68fb1d37f7cb4be /drivers | |
| parent | b14dabcdb651ddd9f85c69c9042322c139e7da84 (diff) | |
| download | linux-277d72a37431d200727189693b14488368b7c258.tar.gz linux-277d72a37431d200727189693b14488368b7c258.tar.bz2 linux-277d72a37431d200727189693b14488368b7c258.zip | |
libata-sff: PCI IRQ handling fix
It is legitimate (although annoying and silly) for a PCI IDE controller
not to be assigned an interrupt and to be polled. The libata-sff code
should therefore not try and request IRQ 0 in this case.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/libata-sff.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 48acc09dab96..b7ac80b4b1fb 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -806,7 +806,10 @@ int ata_pci_init_one(struct pci_dev *pdev, if (rc) goto err_out; - if (!legacy_mode) { + if (!legacy_mode && pdev->irq) { + /* We may have no IRQ assigned in which case we can poll. This + shouldn't happen on a sane system but robustness is cheap + in this case */ rc = devm_request_irq(dev, pdev->irq, pi->port_ops->irq_handler, IRQF_SHARED, DRV_NAME, host); if (rc) @@ -814,7 +817,7 @@ int ata_pci_init_one(struct pci_dev *pdev, ata_port_desc(host->ports[0], "irq %d", pdev->irq); ata_port_desc(host->ports[1], "irq %d", pdev->irq); - } else { + } else if (legacy_mode) { if (!ata_port_is_dummy(host->ports[0])) { rc = devm_request_irq(dev, ATA_PRIMARY_IRQ(pdev), pi->port_ops->irq_handler, |