libata: stop overloading port_info->private_data
authorTejun Heo <htejun@gmail.com>
Tue, 25 Mar 2008 03:22:49 +0000 (12:22 +0900)
committerJeff Garzik <jgarzik@redhat.com>
Thu, 17 Apr 2008 19:44:17 +0000 (15:44 -0400)
commit887125e3740283be25564bfc6fb5d24974b651ab
treebd037e1c17a468fabe1834e707b70b4b43513e4a
parent1bd5b715a305f6f13455e89becbd839010dd14b5
libata: stop overloading port_info->private_data

port_info->private_data is currently used for two purposes - to record
private data about the port_info or to specify host->private_data to
use when allocating ata_host.

This overloading is confusing and counter-intuitive in that
port_info->private_data becomes host->private_data instead of
port->private_data.  In addition, port_info and host don't correspond
to each other 1-to-1.  Currently, the first non-NULL
port_info->private_data is used.

This patch makes port_info->private_data just be what it is -
private_data for the port_info where LLD can jot down extra info.
libata no longer sets host->private_data to the first non-NULL
port_info->private_data, @host_priv argument is added to
ata_pci_init_one() instead.  LLDs which use ata_pci_init_one() can use
this argument to pass in pointer to host private data.  LLDs which
don't should use init-register model anyway and can initialize
host->private_data directly.

Adding @host_priv instead of using init-register model for LLDs which
use ata_pci_init_one() is suggested by Alan Cox.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
39 files changed:
drivers/ata/ata_generic.c
drivers/ata/libata-core.c
drivers/ata/libata-sff.c
drivers/ata/pata_acpi.c
drivers/ata/pata_ali.c
drivers/ata/pata_amd.c
drivers/ata/pata_artop.c
drivers/ata/pata_atiixp.c
drivers/ata/pata_cmd640.c
drivers/ata/pata_cmd64x.c
drivers/ata/pata_cs5530.c
drivers/ata/pata_cs5535.c
drivers/ata/pata_cs5536.c
drivers/ata/pata_cypress.c
drivers/ata/pata_efar.c
drivers/ata/pata_hpt366.c
drivers/ata/pata_hpt37x.c
drivers/ata/pata_hpt3x2n.c
drivers/ata/pata_it8213.c
drivers/ata/pata_it821x.c
drivers/ata/pata_jmicron.c
drivers/ata/pata_marvell.c
drivers/ata/pata_netcell.c
drivers/ata/pata_ns87410.c
drivers/ata/pata_ns87415.c
drivers/ata/pata_oldpiix.c
drivers/ata/pata_opti.c
drivers/ata/pata_optidma.c
drivers/ata/pata_pdc202xx_old.c
drivers/ata/pata_radisys.c
drivers/ata/pata_rz1000.c
drivers/ata/pata_sc1200.c
drivers/ata/pata_serverworks.c
drivers/ata/pata_sil680.c
drivers/ata/pata_sis.c
drivers/ata/pata_sl82c105.c
drivers/ata/pata_triflex.c
drivers/ata/pata_via.c
include/linux/libata.h