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authorLinus Torvalds <torvalds@linux-foundation.org>2013-02-20 23:26:56 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-02-20 23:26:56 +0400
commit8793422fd9ac5037f5047f80473007301df3689f (patch)
treef5aa3b3a564f053e1b5604c45db80193abc734a4 /drivers/acpi/processor_driver.c
parentb3cdda2b4f541439ca4205793040aa2e1c852e3b (diff)
parent10baf04e95fbf7eb6089410220a547211dd2ffa7 (diff)
downloadlinux-8793422fd9ac5037f5047f80473007301df3689f.tar.xz
Merge tag 'pm+acpi-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI and power management updates from Rafael Wysocki: - Rework of the ACPI namespace scanning code from Rafael J. Wysocki with contributions from Bjorn Helgaas, Jiang Liu, Mika Westerberg, Toshi Kani, and Yinghai Lu. - ACPI power resources handling and ACPI device PM update from Rafael J Wysocki. - ACPICA update to version 20130117 from Bob Moore and Lv Zheng with contributions from Aaron Lu, Chao Guan, Jesper Juhl, and Tim Gardner. - Support for Intel Lynxpoint LPSS from Mika Westerberg. - cpuidle update from Len Brown including Intel Haswell support, C1 state for intel_idle, removal of global pm_idle. - cpuidle fixes and cleanups from Daniel Lezcano. - cpufreq fixes and cleanups from Viresh Kumar and Fabio Baltieri with contributions from Stratos Karafotis and Rickard Andersson. - Intel P-states driver for Sandy Bridge processors from Dirk Brandewie. - cpufreq driver for Marvell Kirkwood SoCs from Andrew Lunn. - cpufreq fixes related to ordering issues between acpi-cpufreq and powernow-k8 from Borislav Petkov and Matthew Garrett. - cpufreq support for Calxeda Highbank processors from Mark Langsdorf and Rob Herring. - cpufreq driver for the Freescale i.MX6Q SoC and cpufreq-cpu0 update from Shawn Guo. - cpufreq Exynos fixes and cleanups from Jonghwan Choi, Sachin Kamat, and Inderpal Singh. - Support for "lightweight suspend" from Zhang Rui. - Removal of the deprecated power trace API from Paul Gortmaker. - Assorted updates from Andreas Fleig, Colin Ian King, Davidlohr Bueso, Joseph Salisbury, Kees Cook, Li Fei, Nishanth Menon, ShuoX Liu, Srinivas Pandruvada, Tejun Heo, Thomas Renninger, and Yasuaki Ishimatsu. * tag 'pm+acpi-3.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (267 commits) PM idle: remove global declaration of pm_idle unicore32 idle: delete stray pm_idle comment openrisc idle: delete pm_idle mn10300 idle: delete pm_idle microblaze idle: delete pm_idle m32r idle: delete pm_idle, and other dead idle code ia64 idle: delete pm_idle cris idle: delete idle and pm_idle ARM64 idle: delete pm_idle ARM idle: delete pm_idle blackfin idle: delete pm_idle sparc idle: rename pm_idle to sparc_idle sh idle: rename global pm_idle to static sh_idle x86 idle: rename global pm_idle to static x86_idle APM idle: register apm_cpu_idle via cpuidle cpufreq / intel_pstate: Add kernel command line option disable intel_pstate. cpufreq / intel_pstate: Change to disallow module build tools/power turbostat: display SMI count by default intel_idle: export both C1 and C1E ACPI / hotplug: Fix concurrency issues and memory leaks ...
Diffstat (limited to 'drivers/acpi/processor_driver.c')
-rw-r--r--drivers/acpi/processor_driver.c62
1 files changed, 27 insertions, 35 deletions
diff --git a/drivers/acpi/processor_driver.c b/drivers/acpi/processor_driver.c
index e83311bf1ebd..cbf1f122666b 100644
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@ -81,7 +81,7 @@ MODULE_DESCRIPTION("ACPI Processor Driver");
MODULE_LICENSE("GPL");
static int acpi_processor_add(struct acpi_device *device);
-static int acpi_processor_remove(struct acpi_device *device, int type);
+static int acpi_processor_remove(struct acpi_device *device);
static void acpi_processor_notify(struct acpi_device *device, u32 event);
static acpi_status acpi_processor_hotadd_init(struct acpi_processor *pr);
static int acpi_processor_handle_eject(struct acpi_processor *pr);
@@ -610,7 +610,7 @@ err_free_pr:
return result;
}
-static int acpi_processor_remove(struct acpi_device *device, int type)
+static int acpi_processor_remove(struct acpi_device *device)
{
struct acpi_processor *pr = NULL;
@@ -623,7 +623,7 @@ static int acpi_processor_remove(struct acpi_device *device, int type)
if (pr->id >= nr_cpu_ids)
goto free;
- if (type == ACPI_BUS_REMOVAL_EJECT) {
+ if (device->removal_type == ACPI_BUS_REMOVAL_EJECT) {
if (acpi_processor_handle_eject(pr))
return -EINVAL;
}
@@ -677,36 +677,17 @@ static int is_processor_present(acpi_handle handle)
return 0;
}
-static
-int acpi_processor_device_add(acpi_handle handle, struct acpi_device **device)
-{
- acpi_handle phandle;
- struct acpi_device *pdev;
-
-
- if (acpi_get_parent(handle, &phandle)) {
- return -ENODEV;
- }
-
- if (acpi_bus_get_device(phandle, &pdev)) {
- return -ENODEV;
- }
-
- if (acpi_bus_add(device, pdev, handle, ACPI_BUS_TYPE_PROCESSOR)) {
- return -ENODEV;
- }
-
- return 0;
-}
-
static void acpi_processor_hotplug_notify(acpi_handle handle,
u32 event, void *data)
{
struct acpi_device *device = NULL;
struct acpi_eject_event *ej_event = NULL;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE; /* default */
+ acpi_status status;
int result;
+ acpi_scan_lock_acquire();
+
switch (event) {
case ACPI_NOTIFY_BUS_CHECK:
case ACPI_NOTIFY_DEVICE_CHECK:
@@ -721,12 +702,16 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
if (!acpi_bus_get_device(handle, &device))
break;
- result = acpi_processor_device_add(handle, &device);
+ result = acpi_bus_scan(handle);
if (result) {
acpi_handle_err(handle, "Unable to add the device\n");
break;
}
-
+ result = acpi_bus_get_device(handle, &device);
+ if (result) {
+ acpi_handle_err(handle, "Missing device object\n");
+ break;
+ }
ost_code = ACPI_OST_SC_SUCCESS;
break;
@@ -751,25 +736,32 @@ static void acpi_processor_hotplug_notify(acpi_handle handle,
break;
}
- ej_event->handle = handle;
+ get_device(&device->dev);
+ ej_event->device = device;
ej_event->event = ACPI_NOTIFY_EJECT_REQUEST;
- acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
- (void *)ej_event);
-
- /* eject is performed asynchronously */
- return;
+ /* The eject is carried out asynchronously. */
+ status = acpi_os_hotplug_execute(acpi_bus_hot_remove_device,
+ ej_event);
+ if (ACPI_FAILURE(status)) {
+ put_device(&device->dev);
+ kfree(ej_event);
+ break;
+ }
+ goto out;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
/* non-hotplug event; possibly handled by other handler */
- return;
+ goto out;
}
/* Inform firmware that the hotplug operation has completed */
(void) acpi_evaluate_hotplug_ost(handle, event, ost_code, NULL);
- return;
+
+ out:
+ acpi_scan_lock_release();
}
static acpi_status is_processor_device(acpi_handle handle)
generated by cgit v1.2.3 (git 2.39.0) at 2025-03-05 04:45:02 +0300