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Message-Id: <20120130132451.1049903dbf990fed5876e5bc@canb.auug.org.au>
Date: Mon, 30 Jan 2012 13:24:51 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Greg KH <greg@...ah.com>
Cc: linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
Andi Kleen <ak@...ux.intel.com>, Len Brown <lenb@...nel.org>,
Thomas Renninger <trenn@...e.de>,
Len Brown <len.brown@...el.com>
Subject: linux-next: manual merge of the driver-core tree with Linus' tree
Hi Greg,
Today's linux-next merge of the driver-core tree got a conflict in
drivers/acpi/processor_driver.c between commit 54d5dcc45af7 ("ACPI
processor hotplug: Split up acpi_processor_add") from Linus' tree and
commit 9061e0e16700 ("ACPI: Load acpi-cpufreq from processor driver
automatically") from the driver-core tree.
I fixed it up (I think- see below) and can carry the fix as necessary.
--
Cheers,
Stephen Rothwell sfr@...b.auug.org.au
diff --cc drivers/acpi/processor_driver.c
index 2b805d7,e6920d0..0000000
--- a/drivers/acpi/processor_driver.c
+++ b/drivers/acpi/processor_driver.c
@@@ -459,71 -440,6 +459,72 @@@ static struct notifier_block acpi_cpu_n
.notifier_call = acpi_cpu_soft_notify,
};
+/*
+ * acpi_processor_start() is called by the cpu_hotplug_notifier func:
+ * acpi_cpu_soft_notify(). Getting it __cpuinit{data} is difficult, the
+ * root cause seem to be that acpi_processor_uninstall_hotplug_notify()
+ * is in the module_exit (__exit) func. Allowing acpi_processor_start()
+ * to not be in __cpuinit section, but being called from __cpuinit funcs
+ * via __ref looks like the right thing to do here.
+ */
+static __ref int acpi_processor_start(struct acpi_processor *pr)
+{
+ struct acpi_device *device = per_cpu(processor_device_array, pr->id);
+ int result = 0;
+
+#ifdef CONFIG_CPU_FREQ
+ acpi_processor_ppc_has_changed(pr, 0);
++ acpi_processor_load_module(pr);
+#endif
+ acpi_processor_get_throttling_info(pr);
+ acpi_processor_get_limit_info(pr);
+
+ if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
+ acpi_processor_power_init(pr, device);
+
+ pr->cdev = thermal_cooling_device_register("Processor", device,
+ &processor_cooling_ops);
+ if (IS_ERR(pr->cdev)) {
+ result = PTR_ERR(pr->cdev);
+ goto err_power_exit;
+ }
+
+ dev_dbg(&device->dev, "registered as cooling_device%d\n",
+ pr->cdev->id);
+
+ result = sysfs_create_link(&device->dev.kobj,
+ &pr->cdev->device.kobj,
+ "thermal_cooling");
+ if (result) {
+ printk(KERN_ERR PREFIX "Create sysfs link\n");
+ goto err_thermal_unregister;
+ }
+ result = sysfs_create_link(&pr->cdev->device.kobj,
+ &device->dev.kobj,
+ "device");
+ if (result) {
+ printk(KERN_ERR PREFIX "Create sysfs link\n");
+ goto err_remove_sysfs_thermal;
+ }
+
+ return 0;
+
+err_remove_sysfs_thermal:
+ sysfs_remove_link(&device->dev.kobj, "thermal_cooling");
+err_thermal_unregister:
+ thermal_cooling_device_unregister(pr->cdev);
+err_power_exit:
+ acpi_processor_power_exit(pr, device);
+
+ return result;
+}
+
+/*
+ * Do not put anything in here which needs the core to be online.
+ * For example MSR access or setting up things which check for cpuinfo_x86
+ * (cpu_data(cpu)) values, like CPU feature flags, family, model, etc.
+ * Such things have to be put in and set up above in acpi_processor_start()
+ */
static int __cpuinit acpi_processor_add(struct acpi_device *device)
{
struct acpi_processor *pr = NULL;
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