[PATCH] libata: propogate host private data from probe function

This will let me chop the code size of several drivers right down. In
many cases the actual private data is very useful and constant for a
given host controller so being able to just pass it at probe time would
be very useful indeed (eg with the via driver would could pass the udma
clocking and reduce the code size, or with the AMD one the UDMA
multiplier and the offset)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index a74b407..e51d9a8 100644 (file)
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -4563,6 +4563,7 @@ ata_pci_init_native_mode(struct pci_dev *pdev, struct ata_port_info **port, int
 
        probe_ent->irq = pdev->irq;
        probe_ent->irq_flags = SA_SHIRQ;
+       probe_ent->private_data = port[0]->private_data;
 
        if (ports & ATA_PORT_PRIMARY) {
                probe_ent->port[p].cmd_addr = pci_resource_start(pdev, 0);
@@ -4599,6 +4600,7 @@ static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev, stru
        probe_ent->legacy_mode = 1;
        probe_ent->n_ports = 1;
        probe_ent->hard_port_no = port_num;
+       probe_ent->private_data = port->private_data;
 
        switch(port_num)
        {

diff --git a/include/linux/libata.h b/include/linux/libata.h
index a539031..1464a75 100644 (file)
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -405,6 +405,7 @@ struct ata_port_info {
        unsigned long           mwdma_mask;
        unsigned long           udma_mask;
        const struct ata_port_operations *port_ops;
+       void                    *private_data;
 };
 
 struct ata_timing {