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libata: update libata core layer to use devres

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Update libata core layer to use devres.

* ata_device_add() acquires all resources in managed mode.

* ata_host is allocated as devres associated with ata_host_release.

* Port attached status is handled as devres associated with
  ata_host_attach_release().

* Initialization failure and host removal is handedl by releasing
  devres group.

* Except for ata_scsi_release() removal, LLD interface remains the
  same.  Some functions use hacky is_managed test to support both
  managed and unmanaged devices.  These will go away once all LLDs are
  updated to use devres.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
2007-01-20 16:00:28 +09:00
committed by Jeff Garzik
parent 0529c159db
commit f0d36efdc6
5 changed files with 107 additions and 161 deletions
Download Patch File Download Diff File Expand all files Collapse all files

56
drivers/ata/libata-sff.c
View File

@@ -1006,15 +1006,18 @@ static struct ata_probe_ent *ata_pci_init_legacy_port(struct pci_dev *pdev,
int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
unsigned int n_ports)
{
struct device *dev = &pdev->dev;
struct ata_probe_ent *probe_ent = NULL;
struct ata_port_info *port[2];
u8 mask;
unsigned int legacy_mode = 0;
int disable_dev_on_err = 1;
int rc;
DPRINTK("ENTER\n");
if (!devres_open_group(dev, NULL, GFP_KERNEL))
return -ENOMEM;
BUG_ON(n_ports < 1 || n_ports > 2);
port[0] = port_info[0];
@@ -1031,9 +1034,9 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
boot for the primary video which is BIOS enabled
*/
rc = pci_enable_device(pdev);
rc = pcim_enable_device(pdev);
if (rc)
return rc;
goto err_out;
if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) {
u8 tmp8;
@@ -1049,7 +1052,8 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
left a device in compatibility mode */
if (legacy_mode) {
printk(KERN_ERR "ata: Compatibility mode ATA is not supported on this platform, skipping.\n");
return -EOPNOTSUPP;
rc = -EOPNOTSUPP;
goto err_out;
}
#endif
}
@@ -1057,13 +1061,13 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
if (!legacy_mode) {
rc = pci_request_regions(pdev, DRV_NAME);
if (rc) {
disable_dev_on_err = 0;
pcim_pin_device(pdev);
goto err_out;
}
} else {
/* Deal with combined mode hack. This side of the logic all
goes away once the combined mode hack is killed in 2.6.21 */
if (!request_region(ATA_PRIMARY_CMD, 8, "libata")) {
if (!devm_request_region(dev, ATA_PRIMARY_CMD, 8, "libata")) {
struct resource *conflict, res;
res.start = ATA_PRIMARY_CMD;
res.end = ATA_PRIMARY_CMD + 8 - 1;
@@ -1073,7 +1077,7 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
if (!strcmp(conflict->name, "libata"))
legacy_mode |= ATA_PORT_PRIMARY;
else {
disable_dev_on_err = 0;
pcim_pin_device(pdev);
printk(KERN_WARNING "ata: 0x%0X IDE port busy\n" \
"ata: conflict with %s\n",
ATA_PRIMARY_CMD,
@@ -1082,7 +1086,7 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
} else
legacy_mode |= ATA_PORT_PRIMARY;
if (!request_region(ATA_SECONDARY_CMD, 8, "libata")) {
if (!devm_request_region(dev, ATA_SECONDARY_CMD, 8, "libata")) {
struct resource *conflict, res;
res.start = ATA_SECONDARY_CMD;
res.end = ATA_SECONDARY_CMD + 8 - 1;
@@ -1092,7 +1096,7 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
if (!strcmp(conflict->name, "libata"))
legacy_mode |= ATA_PORT_SECONDARY;
else {
disable_dev_on_err = 0;
pcim_pin_device(pdev);
printk(KERN_WARNING "ata: 0x%X IDE port busy\n" \
"ata: conflict with %s\n",
ATA_SECONDARY_CMD,
@@ -1112,16 +1116,16 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
/* we have legacy mode, but all ports are unavailable */
if (legacy_mode == (1 << 3)) {
rc = -EBUSY;
goto err_out_regions;
goto err_out;
}
/* TODO: If we get no DMA mask we should fall back to PIO */
rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
if (rc)
goto err_out_regions;
goto err_out;
rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
if (rc)
goto err_out_regions;
goto err_out;
if (legacy_mode) {
probe_ent = ata_pci_init_legacy_port(pdev, port, legacy_mode);
@@ -1133,40 +1137,22 @@ int ata_pci_init_one (struct pci_dev *pdev, struct ata_port_info **port_info,
}
if (!probe_ent) {
rc = -ENOMEM;
goto err_out_regions;
goto err_out;
}
pci_set_master(pdev);
if (!ata_device_add(probe_ent)) {
rc = -ENODEV;
goto err_out_ent;
goto err_out;
}
kfree(probe_ent);
devm_kfree(dev, probe_ent);
devres_remove_group(dev, NULL);
return 0;
err_out_ent:
kfree(probe_ent);
err_out_regions:
/* All this conditional stuff is needed for the combined mode hack
until 2.6.21 when it can go */
if (legacy_mode) {
pci_release_region(pdev, 4);
if (legacy_mode & ATA_PORT_PRIMARY) {
release_region(ATA_PRIMARY_CMD, 8);
pci_release_region(pdev, 1);
}
if (legacy_mode & ATA_PORT_SECONDARY) {
release_region(ATA_SECONDARY_CMD, 8);
pci_release_region(pdev, 3);
}
} else
pci_release_regions(pdev);
err_out:
if (disable_dev_on_err)
pci_disable_device(pdev);
devres_release_group(dev, NULL);
return rc;
}