diff options
| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-30 17:43:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-04-30 17:43:48 -0700 |
| commit | dc87c3985e9b442c60994308a96f887579addc39 (patch) | |
| tree | 3299ea602d673f11739b4d3656e9ab069ec7269b | |
| parent | 14e38ac823b7b25e3f4e563c182f93fde78167d6 (diff) | |
libata: honour host controllers that want just one host
The Marvell IDE interface on my machine would hit a BUG_ON() in
lib/iomem.c because it was calling ata_pci_init_one() specifying just a
single port on the host, but that would actually end up trying to
initialize two ports, the second one with bogus information.
This fixes "ata_pci_init_one()" so that it actually passes down the
n_ports variable that it got from the low-level driver to the host
allocation routine ("ata_host_alloc_pinfo()"), which results in the ATA
layer actually having the correct port number information.
And in order to make it all work, I also needed to fix a few places that
had incorrectly hard-coded the fact that a host always had exactly two
ports (both ata_pci_init_bmdma() and ata_request_legacy_irqs() would
just always iterate over both ports).
Acked-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/ata/libata-sff.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c index 8af18ad1ca7f..d211db6b35a2 100644 --- a/drivers/ata/libata-sff.c +++ b/drivers/ata/libata-sff.c @@ -566,7 +566,7 @@ static int ata_pci_init_bmdma(struct ata_host *host) } host->iomap = pcim_iomap_table(pdev); - for (i = 0; i < 2; i++) { + for (i = 0; i < host->n_ports; i++) { struct ata_port *ap = host->ports[i]; void __iomem *bmdma = host->iomap[4] + 8 * i; @@ -875,7 +875,7 @@ static int ata_request_legacy_irqs(struct ata_host *host, legacy_dr = devres_find(host->dev, ata_legacy_release, NULL, NULL); BUG_ON(!legacy_dr); - for (i = 0; i < 2; i++) { + for (i = 0; i < host->n_ports; i++) { unsigned int irq; /* FIXME: ATA_*_IRQ() should take generic device not pci_dev */ @@ -963,10 +963,7 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info, BUG_ON(n_ports < 1 || n_ports > 2); port[0] = port_info[0]; - if (n_ports > 1) - port[1] = port_info[1]; - else - port[1] = port[0]; + port[1] = (n_ports > 1) ? port_info[1] : NULL; /* FIXME: Really for ATA it isn't safe because the device may be multi-purpose and we want to leave it alone if it was already @@ -1001,7 +998,7 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info, } /* alloc and init host */ - host = ata_host_alloc_pinfo(dev, port, 2); + host = ata_host_alloc_pinfo(dev, port, n_ports); if (!host) { dev_printk(KERN_ERR, &pdev->dev, "failed to allocate ATA host\n"); |