[ACPI] S3 resume: avoid kmalloc() might_sleep oops symptom
ACPI now uses kmalloc(...,GPF_ATOMIC) during suspend/resume.
http://bugzilla.kernel.org/show_bug.cgi?id=3469
Signed-off-by: David Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c
index 65cea07..834c2ce 100644
--- a/drivers/acpi/pci_link.c
+++ b/drivers/acpi/pci_link.c
@@ -798,6 +798,11 @@
return_VALUE(0);
}
+/*
+ * FIXME: this is a workaround to avoid nasty warning. It will be removed
+ * after every device calls pci_disable_device in .resume.
+ */
+int acpi_in_resume;
static int
irqrouter_resume(
struct sys_device *dev)
@@ -807,6 +812,7 @@
ACPI_FUNCTION_TRACE("irqrouter_resume");
+ acpi_in_resume = 1;
list_for_each(node, &acpi_link.entries) {
link = list_entry(node, struct acpi_pci_link, node);
if (!link) {
@@ -816,6 +822,7 @@
}
acpi_pci_link_resume(link);
}
+ acpi_in_resume = 0;
return_VALUE(0);
}