Commit 9762b33d authored May 16, 2017 by Thomas Gleixner Committed by Ingo Molnar May 23, 2017

ACPI: Adjust system_state check



To enable smp_processor_id() and might_sleep() debug checks earlier, it's
required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING.

Make the decision whether a pci root is hotplugged depend on SYSTEM_RUNNING
instead of !SYSTEM_BOOTING. It makes no sense to cover states greater than
SYSTEM_RUNNING as there are not hotplug events on reboot and poweroff.

Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Link: http://lkml.kernel.org/r/20170516184735.446455652@linutronix.de


Signed-off-by: Ingo Molnar <mingo@kernel.org>

parent a8fcfc19

drivers/acpi/pci_root.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -523,7 +523,7 @@ static int acpi_pci_root_add(struct acpi_device *device,
	struct acpi_pci_root *root;		struct acpi_pci_root *root;
	acpi_handle handle = device->handle;		acpi_handle handle = device->handle;
	int no_aspm = 0;		int no_aspm = 0;
	bool hotadd = system_state != SYSTEM_BOOTING;		bool hotadd = system_state == SYSTEM_RUNNING;

	root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);		root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL);
	if (!root)		if (!root)

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