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authorTejun Heo <htejun@gmail.com>2008-03-25 12:22:49 +0900
committerJeff Garzik <jgarzik@redhat.com>2008-04-17 15:44:17 -0400
commit887125e3740283be25564bfc6fb5d24974b651ab (patch)
treebd037e1c17a468fabe1834e707b70b4b43513e4a /drivers/ata/libata-sff.c
parent1bd5b715a305f6f13455e89becbd839010dd14b5 (diff)
downloadop-kernel-dev-887125e3740283be25564bfc6fb5d24974b651ab.zip
op-kernel-dev-887125e3740283be25564bfc6fb5d24974b651ab.tar.gz
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>
Diffstat (limited to 'drivers/ata/libata-sff.c')
-rw-r--r--drivers/ata/libata-sff.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index a9d5898..6223ec0 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -827,6 +827,7 @@ int ata_pci_activate_sff_host(struct ata_host *host,
* @pdev: Controller to be initialized
* @ppi: array of port_info, must be enough for two ports
* @sht: scsi_host_template to use when registering the host
+ * @host_priv: host private_data
*
* This is a helper function which can be called from a driver's
* xxx_init_one() probe function if the hardware uses traditional
@@ -848,7 +849,7 @@ int ata_pci_activate_sff_host(struct ata_host *host,
*/
int ata_pci_init_one(struct pci_dev *pdev,
const struct ata_port_info * const * ppi,
- struct scsi_host_template *sht)
+ struct scsi_host_template *sht, void *host_priv)
{
struct device *dev = &pdev->dev;
const struct ata_port_info *pi = NULL;
@@ -882,6 +883,7 @@ int ata_pci_init_one(struct pci_dev *pdev,
rc = ata_pci_prepare_sff_host(pdev, ppi, &host);
if (rc)
goto out;
+ host->private_data = host_priv;
pci_set_master(pdev);
rc = ata_pci_activate_sff_host(host, ata_interrupt, sht);
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