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libata: implement ata_platform_remove_one()

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This relatively simple boiler-plate code is repeated in several platform
drivers. We should implement a common version in libata.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Brian Norris 2012-11-02 12:29:32 -07:00 committed by Jeff Garzik
parent 1896b15edd
commit b7db04d926
2 changed files with 27 additions and 0 deletions
drivers/ata
libata-core.c
include/linux
libata.h

23
drivers/ata/libata-core.c
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@ -67,6 +67,7 @@
#include <linux/cdrom.h> #include <linux/cdrom.h>
#include <linux/ratelimit.h> #include <linux/ratelimit.h>
#include <linux/pm_runtime.h> #include <linux/pm_runtime.h>
#include <linux/platform_device.h>
#include "libata.h" #include "libata.h"
#include "libata-transport.h" #include "libata-transport.h"
@ -6382,6 +6383,26 @@ int ata_pci_device_resume(struct pci_dev *pdev)
#endif /* CONFIG_PCI */ #endif /* CONFIG_PCI */
/**
* ata_platform_remove_one - Platform layer callback for device removal
* @pdev: Platform device that was removed
*
* Platform layer indicates to libata via this hook that hot-unplug or
* module unload event has occurred. Detach all ports. Resource
* release is handled via devres.
*
* LOCKING:
* Inherited from platform layer (may sleep).
*/
int ata_platform_remove_one(struct platform_device *pdev)
{
struct ata_host *host = platform_get_drvdata(pdev);
ata_host_detach(host);
return 0;
}
static int __init ata_parse_force_one(char **cur, static int __init ata_parse_force_one(char **cur,
struct ata_force_ent *force_ent, struct ata_force_ent *force_ent,
const char **reason) const char **reason)
@ -6877,6 +6898,8 @@ EXPORT_SYMBOL_GPL(ata_pci_device_resume);
#endif /* CONFIG_PM */ #endif /* CONFIG_PM */
#endif /* CONFIG_PCI */ #endif /* CONFIG_PCI */
EXPORT_SYMBOL_GPL(ata_platform_remove_one);
EXPORT_SYMBOL_GPL(__ata_ehi_push_desc); EXPORT_SYMBOL_GPL(__ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_push_desc); EXPORT_SYMBOL_GPL(ata_ehi_push_desc);
EXPORT_SYMBOL_GPL(ata_ehi_clear_desc); EXPORT_SYMBOL_GPL(ata_ehi_clear_desc);

4
include/linux/libata.h
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@ -1115,6 +1115,10 @@ extern int ata_pci_device_resume(struct pci_dev *pdev);
#endif /* CONFIG_PM */ #endif /* CONFIG_PM */
#endif /* CONFIG_PCI */ #endif /* CONFIG_PCI */
struct platform_device;
extern int ata_platform_remove_one(struct platform_device *pdev);
/* /*
* ACPI - drivers/ata/libata-acpi.c * ACPI - drivers/ata/libata-acpi.c
*/ */