Commit b9a3b4d1 authored May 09, 2007 by Olof Johansson Committed by Jeff Garzik May 11, 2007

pata_platform: don't use generic ata_port_start



I have a system where I have a simple IDE controller that sits on a
local bus without bus master dma capability, and thus no dma_mapping
ops defined for the device/bus.

pata_platform works great for me, with the exception of using the generic
ata_port_start which tries to do a dmam_alloc_coherent.

Looks like it doesn't need to allocate a prd table at all, so replace it
with a dummy function instead.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

parent b196fc69

drivers/ata/pata_platform.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -48,6 +48,8 @@ static int pata_platform_set_mode(struct ata_port ap, struct ata_device *unuse
		return 0;
		}

		static int ata_dummy_ret0(struct ata_port *ap) { return 0; }

		static struct scsi_host_template pata_platform_sht = {
		.module = THIS_MODULE,
		.name = DRV_NAME,
		@@ -91,7 +93,7 @@ static struct ata_port_operations pata_platform_port_ops = {
		.irq_on = ata_irq_on,
		.irq_ack = ata_irq_ack,

		.port_start = ata_port_start,
		.port_start = ata_dummy_ret0,
		};

		static void pata_platform_setup_port(struct ata_ioports *ioaddr,