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ide: add ide_host_free() helper (take 2)

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* Add ide_host_free() helper and convert ide_host_remove() to use it.

* Fix handling of ide_host_register() failure in ide_host_add(),
  icside.c, ide-generic.c, falconide.c and sgiioc4.c.

While at it:

* Fix handling of ide_host_alloc_all() failure in ide-generic.c.

* Fix handling of ide_host_alloc() failure in falconide.c
  (also return the correct error value if no device is found).

v2:
* falconide build fix. (From Stephen Rothwell)

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-07-23 19:55:59 +02:00
parent 18de10170d
commit 8a69580e1e
6 changed files with 88 additions and 20 deletions
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21
drivers/ide/arm/icside.c
View file

@ -445,6 +445,7 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
void __iomem *base;
struct ide_host *host;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
int ret;
base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
if (!base)
@ -472,9 +473,15 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
ecard_set_drvdata(ec, state);
ide_host_register(host, NULL, hws);
ret = ide_host_register(host, NULL, hws);
if (ret)
goto err_free;
return 0;
err_free:
ide_host_free(host);
ecard_set_drvdata(ec, NULL);
return ret;
}
static const struct ide_port_info icside_v6_port_info __initdata = {
@ -547,11 +554,17 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
d.dma_ops = NULL;
}
ide_host_register(host, &d, hws);
ret = ide_host_register(host, NULL, hws);
if (ret)
goto err_free;
return 0;
out:
err_free:
ide_host_free(host);
if (d.dma_ops)
free_dma(ec->dma);
ecard_set_drvdata(ec, NULL);
out:
return ret;
}

27
drivers/ide/ide-generic.c
View file

@ -84,13 +84,14 @@ static int __init ide_generic_init(void)
{
hw_regs_t hw[MAX_HWIFS], *hws[MAX_HWIFS];
struct ide_host *host;
int i;
unsigned long io_addr;
int i, rc;
printk(KERN_INFO DRV_NAME ": please use \"probe_mask=0x3f\" module "
"parameter for probing all legacy ISA IDE ports\n");
for (i = 0; i < MAX_HWIFS; i++) {
unsigned long io_addr = ide_default_io_base(i);
io_addr = ide_default_io_base(i);
hws[i] = NULL;
@ -120,14 +121,32 @@ static int __init ide_generic_init(void)
}
host = ide_host_alloc_all(NULL, hws);
if (host)
ide_host_register(host, NULL, hws);
if (host == NULL) {
rc = -ENOMEM;
goto err;
}
rc = ide_host_register(host, NULL, hws);
if (rc)
goto err_free;
if (ide_generic_sysfs_init())
printk(KERN_ERR DRV_NAME ": failed to create ide_generic "
"class\n");
return 0;
err_free:
ide_host_free(host);
err:
for (i = 0; i < MAX_HWIFS; i++) {
if (hws[i] == NULL)
continue;
io_addr = hws[i]->io_ports.data_addr;
release_region(io_addr + 0x206, 1);
release_region(io_addr, 8);
}
return rc;
}
module_init(ide_generic_init);

23
drivers/ide/ide-probe.c
View file

@ -1729,12 +1729,17 @@ int ide_host_add(const struct ide_port_info *d, hw_regs_t **hws,
struct ide_host **hostp)
{
struct ide_host *host;
int rc;
host = ide_host_alloc(d, hws);
if (host == NULL)
return -ENOMEM;
ide_host_register(host, d, hws);
rc = ide_host_register(host, d, hws);
if (rc) {
ide_host_free(host);
return rc;
}
if (hostp)
*hostp = host;
@ -1743,7 +1748,7 @@ int ide_host_add(const struct ide_port_info *d, hw_regs_t **hws,
}
EXPORT_SYMBOL_GPL(ide_host_add);
void ide_host_remove(struct ide_host *host)
void ide_host_free(struct ide_host *host)
{
ide_hwif_t *hwif;
int i;
@ -1754,13 +1759,25 @@ void ide_host_remove(struct ide_host *host)
if (hwif == NULL)
continue;
ide_unregister(hwif);
ide_free_port_slot(hwif->index);
kfree(hwif);
}
kfree(host);
}
EXPORT_SYMBOL_GPL(ide_host_free);
void ide_host_remove(struct ide_host *host)
{
int i;
for (i = 0; i < MAX_HWIFS; i++) {
if (host->ports[i])
ide_unregister(host->ports[i]);
}
ide_host_free(host);
}
EXPORT_SYMBOL_GPL(ide_host_remove);
void ide_port_scan(ide_hwif_t *hwif)

22
drivers/ide/legacy/falconide.c
View file

@ -114,9 +114,10 @@ static int __init falconide_init(void)
{
struct ide_host *host;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
int rc;
if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
return 0;
return -ENODEV;
printk(KERN_INFO "ide: Falcon IDE controller\n");
@ -128,13 +129,24 @@ static int __init falconide_init(void)
falconide_setup_ports(&hw);
host = ide_host_alloc(&falconide_port_info, hws);
if (host) {
ide_get_lock(NULL, NULL);
ide_host_register(host, &falconide_port_info, hws);
ide_release_lock();
if (host == NULL) {
rc = -ENOMEM;
goto err;
}
ide_get_lock(NULL, NULL);
rc = ide_host_register(host, &falconide_port_info, hws);
ide_release_lock();
if (rc)
goto err_free;
return 0;
err_free:
ide_host_free(host);
err:
release_mem_region(ATA_HD_BASE, 0x40);
return rc;
}
module_init(falconide_init);

14
drivers/ide/pci/sgiioc4.c
View file

@ -603,6 +603,7 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
struct ide_host *host;
hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
struct ide_port_info d = sgiioc4_port_info;
int rc;
/* Get the CmdBlk and CtrlBlk Base Registers */
bar0 = pci_resource_start(dev, 0);
@ -638,17 +639,22 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4));
host = ide_host_alloc(&d, hws);
if (host == NULL)
if (host == NULL) {
rc = -ENOMEM;
goto err;
}
if (ide_host_register(host, &d, hws))
return -EIO;
rc = ide_host_register(host, &d, hws);
if (rc)
goto err_free;
return 0;
err_free:
ide_host_free(host);
err:
release_mem_region(cmd_phys_base, IOC4_CMD_CTL_BLK_SIZE);
iounmap(virt_base);
return -ENOMEM;
return rc;
}
static unsigned int __devinit

1
include/linux/ide.h
View file

@ -1236,6 +1236,7 @@ void ide_port_apply_params(ide_hwif_t *);
struct ide_host *ide_host_alloc_all(const struct ide_port_info *, hw_regs_t **);
struct ide_host *ide_host_alloc(const struct ide_port_info *, hw_regs_t **);
void ide_host_free(struct ide_host *);
int ide_host_register(struct ide_host *, const struct ide_port_info *,
hw_regs_t **);
int ide_host_add(const struct ide_port_info *, hw_regs_t **,