Commit 02f076aa authored Sep 26, 2006 by Alan Cox Committed by Jeff Garzik Sep 26, 2006

[PATCH] libata: refuse to register IRQless ports



We don't currently support pure polled operation so when we meet a BIOS
which forgot to assign an IRQ to a PCI device it all goes a little pear
shaped. Trap this case properly.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

parent e8216dee

drivers/ata/libata-core.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -5453,6 +5453,11 @@ int ata_device_add(const struct ata_probe_ent *ent)
		int rc;

		DPRINTK("ENTER\n");

		if (ent->irq == 0) {
		dev_printk(KERN_ERR, dev, "is not available: No interrupt assigned.\n");
		return 0;
		}
		/* alloc a container for our list of ATA ports (buses) */
		host = kzalloc(sizeof(struct ata_host) +
		(ent->n_ports * sizeof(void *)), GFP_KERNEL);