[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>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index bdd9f37f8101..7289da3c4db6 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -145,10 +145,14 @@ acpi_os_vprintf(const char *fmt, va_list args)
 #endif
 }
 
+extern int acpi_in_resume;
 void *
 acpi_os_allocate(acpi_size size)
 {
-        return kmalloc(size, GFP_KERNEL);
+        if (acpi_in_resume)
+                return kmalloc(size, GFP_ATOMIC);
+        else
+                return kmalloc(size, GFP_KERNEL);
 }
 
 void