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Commit deb5e5c0 authored by Jeremy Higdon's avatar Jeremy Higdon Committed by Bartlomiej Zolnierkiewicz
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[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: default avatarJeremy Higdon <jeremy@sgi.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent acd9b7b4

drivers/ide/pci/sgiioc4.c

+7 −1
Original line number Diff line number Diff line
@@ -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;