Commit e7647027 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'pm+acpi-3.12-late' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm 

Pull ACPI and power management fixes from Rafael J Wysocki:
 "Last-minute ACPI and power management fixes for 3.12

   - Revert epoll and select commits related to the freezer, introduced
     during the 3.11 cycle, that cause mysterious user space breakage to
     occur during resume from suspend to RAM for multiple users of
     32-bit x86 systems.  Material for 3.11.y stable kernels.

   - Revert a recent ACPI-based PCI hotplug (ACPIPHP) commit that was
     part of boot problem fixes for one machine, but turns out to cause
     issues with hotplug on Thunderbolt chains with multiple devices.
     It also turns out to be unnecessary after another fix in the same
     area that went in later.  From Mika Westerberg"

* tag 'pm+acpi-3.12-late' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "ACPI / hotplug / PCI: Avoid doing too much for spurious notifies"
  Revert "select: use freezable blocking call"
  Revert "epoll: use freezable blocking call"
parents 74c85e13 ab122590

drivers/pci/hotplug/acpiphp_glue.c

+1 −5
Original line number Original line Diff line number Diff line
@@ -552,9 +552,8 @@ static void __ref enable_slot(struct acpiphp_slot *slot) 
	struct acpiphp_func *func;

	struct acpiphp_func *func;

	int max, pass;

	int max, pass;

	LIST_HEAD(add_list);

	LIST_HEAD(add_list);

	int nr_found;





	nr_found = acpiphp_rescan_slot(slot);

	acpiphp_rescan_slot(slot);

	max = acpiphp_max_busnr(bus);

	max = acpiphp_max_busnr(bus);

	for (pass = 0; pass < 2; pass++) {

	for (pass = 0; pass < 2; pass++) {

		list_for_each_entry(dev, &bus->devices, bus_list) {

		list_for_each_entry(dev, &bus->devices, bus_list) {
@@ -574,9 +573,6 @@ static void __ref enable_slot(struct acpiphp_slot *slot) 
		}

		}

	}

	}

	__pci_bus_assign_resources(bus, &add_list, NULL);

	__pci_bus_assign_resources(bus, &add_list, NULL);

	/* Nothing more to do here if there are no new devices on this bus. */

	if (!nr_found && (slot->flags & SLOT_ENABLED))

		return;





	acpiphp_sanitize_bus(bus);

	acpiphp_sanitize_bus(bus);

	acpiphp_set_hpp_values(bus);

	acpiphp_set_hpp_values(bus);

fs/eventpoll.c

+1 −3
Original line number Original line Diff line number Diff line
@@ -34,7 +34,6 @@ 
#include <linux/mutex.h>

#include <linux/mutex.h>

#include <linux/anon_inodes.h>

#include <linux/anon_inodes.h>

#include <linux/device.h>

#include <linux/device.h>

#include <linux/freezer.h>

#include <asm/uaccess.h>

#include <asm/uaccess.h>

#include <asm/io.h>

#include <asm/io.h>

#include <asm/mman.h>

#include <asm/mman.h>
@@ -1605,8 +1604,7 @@ fetch_events: 
			}

			}





			spin_unlock_irqrestore(&ep->lock, flags);

			spin_unlock_irqrestore(&ep->lock, flags);

			if (!freezable_schedule_hrtimeout_range(to, slack,

			if (!schedule_hrtimeout_range(to, slack, HRTIMER_MODE_ABS))

								HRTIMER_MODE_ABS))

				timed_out = 1;

				timed_out = 1;





			spin_lock_irqsave(&ep->lock, flags);

			spin_lock_irqsave(&ep->lock, flags);

fs/select.c

+1 −2
Original line number Original line Diff line number Diff line
@@ -238,8 +238,7 @@ int poll_schedule_timeout(struct poll_wqueues *pwq, int state, 




	set_current_state(state);

	set_current_state(state);

	if (!pwq->triggered)

	if (!pwq->triggered)

		rc = freezable_schedule_hrtimeout_range(expires, slack,

		rc = schedule_hrtimeout_range(expires, slack, HRTIMER_MODE_ABS);

							HRTIMER_MODE_ABS);

	__set_current_state(TASK_RUNNING);

	__set_current_state(TASK_RUNNING);





	/*

	/*

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