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| author | Tejun Heo <htejun@gmail.com> | 2007-08-06 18:36:23 +0900 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2007-10-12 14:55:30 -0400 |
| commit | f58229f8060055b08b34008ea08f31de1e2f003c (patch) | |
| tree | 6ca5ef546671cb975ef3632fb032c238eaf1bb4c /drivers/ata/sata_sil.c | |
| parent | 9af5c9c97dc9d599281778864c72b385f0c63341 (diff) | |
| download | linux-f58229f8060055b08b34008ea08f31de1e2f003c.tar.bz2 | |
libata-link: implement and use link/device iterators
Multiple links and different number of devices per link should be
considered to iterate over links and devices. This patch implements
and uses link and device iterators - ata_port_for_each_link() and
ata_link_for_each_dev() - and ata_link_max_devices().
This change makes a lot of functions iterate over only possible
devices instead of from dev 0 to dev ATA_MAX_DEVICES. All such
changes have been examined and nothing should be broken.
While at it, add a separating comment before device helpers to
distinguish them better from link helpers and others.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'drivers/ata/sata_sil.c')
| -rw-r--r-- | drivers/ata/sata_sil.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/ata/sata_sil.c b/drivers/ata/sata_sil.c index 2ddbe4cc71e4..4c9295a49a49 100644 --- a/drivers/ata/sata_sil.c +++ b/drivers/ata/sata_sil.c @@ -303,22 +303,20 @@ static int sil_set_mode (struct ata_port *ap, struct ata_device **r_failed) struct ata_device *dev; void __iomem *mmio_base = host->iomap[SIL_MMIO_BAR]; void __iomem *addr = mmio_base + sil_port[ap->port_no].xfer_mode; - u32 tmp, dev_mode[2]; - unsigned int i; + u32 tmp, dev_mode[2] = { }; int rc; rc = ata_do_set_mode(ap, r_failed); if (rc) return rc; - for (i = 0; i < 2; i++) { - dev = &ap->link.device[i]; + ata_link_for_each_dev(dev, &ap->link) { if (!ata_dev_enabled(dev)) - dev_mode[i] = 0; /* PIO0/1/2 */ + dev_mode[dev->devno] = 0; /* PIO0/1/2 */ else if (dev->flags & ATA_DFLAG_PIO) - dev_mode[i] = 1; /* PIO3/4 */ + dev_mode[dev->devno] = 1; /* PIO3/4 */ else - dev_mode[i] = 3; /* UDMA */ + dev_mode[dev->devno] = 3; /* UDMA */ /* value 2 indicates MDMA */ } |