From deb5e5c0c68e59b1bf9ede66da9e6a89f6557595 Mon Sep 17 00:00:00 2001 From: Jeremy Higdon Date: Thu, 15 Dec 2005 02:10:35 +0100 Subject: [PATCH] sgiioc4: check for no hwifs available Add a check to the sgiioc4 driver for the case where all available ide_hwifs structures are in use. Signed-off-by: Jeremy Higdon Signed-off-by: Bartlomiej Zolnierkiewicz --- drivers/ide/pci/sgiioc4.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'drivers/ide/pci/sgiioc4.c') diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c index af526b671c4e..4ee597d08797 100644 --- a/drivers/ide/pci/sgiioc4.c +++ b/drivers/ide/pci/sgiioc4.c @@ -622,12 +622,18 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev, ide_pci_device_t * d) ide_hwif_t *hwif; int h; + /* + * Find an empty HWIF; if none available, return -ENOMEM. + */ for (h = 0; h < MAX_HWIFS; ++h) { hwif = &ide_hwifs[h]; - /* Find an empty HWIF */ if (hwif->chipset == ide_unknown) 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 */ base = pci_resource_start(dev, 0) + IOC4_CMD_OFFSET; -- cgit v1.2.1