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author | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-04-26 17:36:31 +0200 |
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committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-04-26 17:36:31 +0200 |
commit | bad7c825cb27377faf1c926953aa15c980c62620 (patch) | |
tree | b23b40a51c7f6399eae5cedb3fe27d4d209055a8 /drivers/ide/setup-pci.c | |
parent | 1baccff8a5823b51d7bf2740ef3ef17e06bfa7e2 (diff) | |
download | linux-bad7c825cb27377faf1c926953aa15c980c62620.tar.gz linux-bad7c825cb27377faf1c926953aa15c980c62620.tar.bz2 linux-bad7c825cb27377faf1c926953aa15c980c62620.zip |
ide: cleanup ide_match_hwif()
* Remove no longer needed matching against I/O base and 'io_base' argument.
* Move printk() to the caller and remove 'name' argument.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/setup-pci.c')
-rw-r--r-- | drivers/ide/setup-pci.c | 47 |
1 files changed, 15 insertions, 32 deletions
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c index 2dc3835478ec..7347faf8bc41 100644 --- a/drivers/ide/setup-pci.c +++ b/drivers/ide/setup-pci.c @@ -22,42 +22,20 @@ /** - * ide_match_hwif - match a PCI IDE against an ide_hwif - * @io_base: I/O base of device - * @bootable: set if its bootable - * @name: name of device + * ide_match_hwif - find free ide_hwifs[] slot + * @bootable: bootable flag * - * Match a PCI IDE port against an entry in ide_hwifs[], - * based on io_base port if possible. Return the matching hwif, - * or a new hwif. If we find an error (clashing, out of devices, etc) - * return NULL - * - * FIXME: we need to handle mmio matches here too + * Return the new hwif. If we are out of free slots return NULL. */ -static ide_hwif_t *ide_match_hwif(unsigned long io_base, u8 bootable, const char *name) +static ide_hwif_t *ide_match_hwif(u8 bootable) { - int h; ide_hwif_t *hwif; + int h; /* - * Look for a hwif with matching io_base default value. - * If chipset is "ide_unknown", then claim that hwif slot. - * Otherwise, some other chipset has already claimed it.. :( - */ - for (h = 0; h < MAX_HWIFS; ++h) { - hwif = &ide_hwifs[h]; - if (hwif->io_ports[IDE_DATA_OFFSET] == io_base) { - if (hwif->chipset == ide_unknown) - return hwif; /* match */ - printk(KERN_ERR "%s: port 0x%04lx already claimed by %s\n", - name, io_base, hwif->name); - return NULL; /* already claimed */ - } - } - /* - * Okay, there is no hwif matching our io_base, - * so we'll just claim an unassigned slot. + * Claim an unassigned slot. + * * Give preference to claiming other slots before claiming ide0/ide1, * just in case there's another interface yet-to-be-scanned * which uses ports 1f0/170 (the ide0/ide1 defaults). @@ -83,7 +61,7 @@ static ide_hwif_t *ide_match_hwif(unsigned long io_base, u8 bootable, const char if (hwif->chipset == ide_unknown) return hwif; /* pick an unused entry */ } - printk(KERN_ERR "%s: too many IDE interfaces, no room in table\n", name); + return NULL; } @@ -367,8 +345,13 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev, ctl = port ? 0x374 : 0x3f4; base = port ? 0x170 : 0x1f0; } - if ((hwif = ide_match_hwif(base, bootable, d->name)) == NULL) - return NULL; /* no room in ide_hwifs[] */ + + hwif = ide_match_hwif(bootable); + if (hwif == NULL) { + printk(KERN_ERR "%s: too many IDE interfaces, no room in " + "table\n", d->name); + return NULL; + } memset(&hw, 0, sizeof(hw)); hw.irq = irq; |