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[PATCH] sgiioc4: check for no hwifs available

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Add a check to the sgiioc4 driver for the case where all available
ide_hwifs structures are in use.

Signed-off-by: Jeremy Higdon <jeremy@sgi.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Jeremy Higdon 2005-12-15 02:10:35 +01:00 committed by Bartlomiej Zolnierkiewicz
parent acd9b7b4e0
commit deb5e5c0c6
1 changed files with 7 additions and 1 deletions
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8
drivers/ide/pci/sgiioc4.c
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@ -622,12 +622,18 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d)
ide_hwif_t *hwif; ide_hwif_t *hwif;
int h; int h;
/*
* Find an empty HWIF; if none available, return -ENOMEM.
*/
for (h = 0; h < MAX_HWIFS; ++h) { for (h = 0; h < MAX_HWIFS; ++h) {
hwif = &ide_hwifs[h]; hwif = &ide_hwifs[h];
/* Find an empty HWIF */
if (hwif->chipset == ide_unknown) if (hwif->chipset == ide_unknown)
break; break;
} }
if (h == MAX_HWIFS) {
printk(KERN_ERR "%s: too many IDE interfaces, no room in table\n", d->name);
return -ENOMEM;
}
/* Get the CmdBlk and CtrlBlk Base Registers */ /* Get the CmdBlk and CtrlBlk Base Registers */
base = pci_resource_start(dev, 0) + IOC4_CMD_OFFSET; base = pci_resource_start(dev, 0) + IOC4_CMD_OFFSET;