diff options
author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-01-29 12:58:34 (GMT) |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-01-29 12:58:34 (GMT) |
commit | 64e94e7e0ffb20ee11a596aa04fcdeefb33e000d (patch) | |
tree | 9ef0331d6c207b54502906c239b40220e8113502 /drivers | |
parent | 2c0d4fe0189ae5e29fd9602d5b83f3b2b169bd1b (diff) | |
parent | c511cc1990bbc263c3f8a2ef4d7d613a3b40ffe2 (diff) | |
download | linux-fsl-qoriq-64e94e7e0ffb20ee11a596aa04fcdeefb33e000d.tar.xz |
Merge branch 'acpi-scan' into acpi-cleanup
The following commits depend on the 'acpi-scan' material.
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/acpi/dock.c | 8 | ||||
-rw-r--r-- | drivers/acpi/scan.c | 28 | ||||
-rw-r--r-- | drivers/pci/hotplug/acpiphp_glue.c | 10 |
3 files changed, 20 insertions, 26 deletions
diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 420d24f..78648f8 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -336,13 +336,9 @@ static struct acpi_device * dock_create_acpi_device(acpi_handle handle) static void dock_remove_acpi_device(acpi_handle handle) { struct acpi_device *device; - int ret; - if (!acpi_bus_get_device(handle, &device)) { - ret = acpi_bus_trim(device); - if (ret) - pr_debug("error removing bus, %x\n", -ret); - } + if (!acpi_bus_get_device(handle, &device)) + acpi_bus_trim(device); } /** diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index b206ce5..774b17d 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -52,6 +52,7 @@ static const struct acpi_device_id acpi_platform_device_ids[] = { static LIST_HEAD(acpi_device_list); static LIST_HEAD(acpi_bus_id_list); +static DEFINE_MUTEX(acpi_scan_lock); DEFINE_MUTEX(acpi_device_lock); LIST_HEAD(acpi_wakeup_device_list); @@ -127,13 +128,8 @@ void acpi_bus_hot_remove_device(void *context) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Hot-removing device %s...\n", dev_name(&device->dev))); - if (acpi_bus_trim(device)) { - printk(KERN_ERR PREFIX - "Removing device failed\n"); - goto err_out; - } - - /* device has been freed */ + acpi_bus_trim(device); + /* Device node has been released. */ device = NULL; /* power off device */ @@ -1616,19 +1612,22 @@ static acpi_status acpi_bus_device_attach(acpi_handle handle, u32 lvl_not_used, int acpi_bus_scan(acpi_handle handle) { void *device = NULL; + int error = 0; + + mutex_lock(&acpi_scan_lock); if (ACPI_SUCCESS(acpi_bus_check_add(handle, 0, NULL, &device))) acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, acpi_bus_check_add, NULL, NULL, &device); if (!device) - return -ENODEV; - - if (ACPI_SUCCESS(acpi_bus_device_attach(handle, 0, NULL, NULL))) + error = -ENODEV; + else if (ACPI_SUCCESS(acpi_bus_device_attach(handle, 0, NULL, NULL))) acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, acpi_bus_device_attach, NULL, NULL, NULL); - return 0; + mutex_unlock(&acpi_scan_lock); + return error; } EXPORT_SYMBOL(acpi_bus_scan); @@ -1655,8 +1654,10 @@ static acpi_status acpi_bus_remove(acpi_handle handle, u32 lvl_not_used, return AE_OK; } -int acpi_bus_trim(struct acpi_device *start) +void acpi_bus_trim(struct acpi_device *start) { + mutex_lock(&acpi_scan_lock); + /* * Execute acpi_bus_device_detach() as a post-order callback to detach * all ACPI drivers from the device nodes being removed. @@ -1671,7 +1672,8 @@ int acpi_bus_trim(struct acpi_device *start) acpi_walk_namespace(ACPI_TYPE_ANY, start->handle, ACPI_UINT32_MAX, NULL, acpi_bus_remove, NULL, NULL); acpi_bus_remove(start->handle, 0, NULL, NULL); - return 0; + + mutex_unlock(&acpi_scan_lock); } EXPORT_SYMBOL_GPL(acpi_bus_trim); diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c index 9e2b1f6..d1a6f4a 100644 --- a/drivers/pci/hotplug/acpiphp_glue.c +++ b/drivers/pci/hotplug/acpiphp_glue.c @@ -742,8 +742,7 @@ static int acpiphp_bus_add(struct acpiphp_func *func) /* this shouldn't be in here, so remove * the bus then re-add it... */ - ret_val = acpi_bus_trim(device); - dbg("acpi_bus_trim return %x\n", ret_val); + acpi_bus_trim(device); } ret_val = acpi_bus_scan(func->handle); @@ -772,11 +771,8 @@ static int acpiphp_bus_trim(acpi_handle handle) return retval; } - retval = acpi_bus_trim(device); - if (retval) - err("cannot remove from acpi list\n"); - - return retval; + acpi_bus_trim(device); + return 0; } static void acpiphp_set_acpi_region(struct acpiphp_slot *slot) |