From: Matthew Garrett <mjg@xxxxxxxxxx>
Attaching ata objects to docks makes it possible to identify which dock
should be used to trigger the removal of a device, and also allows
userspace to cleanly unmount filesystems before completing a
user-requested undocking.
Signed-off-by: Matthew Garrett <mjg@xxxxxxxxxx>
Acked-by: Holger Macht <holger@xxxxxxxx>
---
libata-acpi.c | 20 ++++++++++++++++++++
libata-scsi.c | 3 +++
libata.h | 4 ++++
3 files changed, 27 insertions(+)
Index: linux/drivers/ata/libata-acpi.c
===================================================================
--- linux.orig/drivers/ata/libata-acpi.c
+++ linux/drivers/ata/libata-acpi.c
@@ -955,6 +955,26 @@ void ata_acpi_on_disable(struct ata_devi
ata_acpi_clear_gtf(dev);
}
+void ata_acpi_bind_dock(struct ata_device *dev)
+{
+ struct device **docks;
+
+ if (!ata_dev_acpi_handle(dev))
+ return;
+ docks = dock_link_device(ata_dev_acpi_handle(dev));
+ kfree(docks);
+}
+
+void ata_acpi_unbind_dock(struct ata_device *dev)
+{
+ struct device **docks;
+
+ if (!ata_dev_acpi_handle(dev))
+ return;
+ docks = dock_unlink_device(ata_dev_acpi_handle(dev));
+ kfree(docks);
+}
+
static int is_pci_ata(struct device *dev)
{
struct pci_dev *pdev;
Index: linux/drivers/ata/libata-scsi.c
===================================================================
--- linux.orig/drivers/ata/libata-scsi.c
+++ linux/drivers/ata/libata-scsi.c
@@ -3443,6 +3443,7 @@ void ata_scsi_scan_host(struct ata_port
if (!IS_ERR(sdev)) {
dev->sdev = sdev;
scsi_device_put(sdev);
+ ata_acpi_bind_dock(dev);
} else {
dev->sdev = NULL;
}
@@ -3543,6 +3544,8 @@ static void ata_scsi_remove_dev(struct a
sdev = dev->sdev;
dev->sdev = NULL;
+ ata_acpi_unbind_dock(dev);
+
if (sdev) {
/* If user initiated unplug races with us, sdev can go
* away underneath us after the host lock and
Index: linux/drivers/ata/libata.h
===================================================================
--- linux.orig/drivers/ata/libata.h
+++ linux/drivers/ata/libata.h
@@ -116,6 +116,8 @@ extern void ata_acpi_on_disable(struct a
extern void ata_acpi_set_state(struct ata_port *ap, pm_message_t state);
extern int ata_acpi_register(void);
extern void ata_acpi_unregister(void);
+extern void ata_acpi_bind_dock(struct ata_device *dev);
+extern void ata_acpi_unbind_dock(struct ata_device *dev);
#else
static inline void ata_acpi_dissociate(struct ata_host *host) { }
static inline int ata_acpi_on_suspend(struct ata_port *ap) { return 0; }
@@ -126,6 +128,8 @@ static inline void ata_acpi_set_state(st
pm_message_t state) { }
static inline int ata_acpi_register(void) { return 0; }
static void ata_acpi_unregister(void) { }
+static void ata_acpi_bind_dock(struct ata_device *dev) { }
+static void ata_acpi_unbind_dock(struct ata_device *dev) { }
#endif
/* libata-scsi.c */
--
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