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authorKees Cook <keescook@chromium.org>2016-07-25 13:50:36 -0700
committerKees Cook <keescook@chromium.org>2016-07-25 13:50:36 -0700
commit74e630a7582e6b3cb39559d712a0049f08dea8a0 (patch)
tree98a752412dcfc74d802024c1d9e8c541b93174f9 /drivers/acpi/processor_throttling.c
parent35da60941e44dbf57868e67686dd24cc1a33125a (diff)
parent523d939ef98fd712632d93a5a2b588e477a7565e (diff)
Merge tag 'v4.7' into for-linus/pstore
Linux 4.7
Diffstat (limited to 'drivers/acpi/processor_throttling.c')
-rw-r--r--drivers/acpi/processor_throttling.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index f170d746336d..c72e64893d03 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -676,6 +676,15 @@ static int acpi_processor_get_throttling_fadt(struct acpi_processor *pr)
if (!pr->flags.throttling)
return -ENODEV;
+ /*
+ * We don't care about error returns - we just try to mark
+ * these reserved so that nobody else is confused into thinking
+ * that this region might be unused..
+ *
+ * (In particular, allocating the IO range for Cardbus)
+ */
+ request_region(pr->throttling.address, 6, "ACPI CPU throttle");
+
pr->throttling.state = 0;
duty_mask = pr->throttling.state_count - 1;