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-rw-r--r--drivers/acpi/acpica/exsystem.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/exsystem.c b/drivers/acpi/acpica/exsystem.c
index 6d32e09327f1..675aaa91a770 100644
--- a/drivers/acpi/acpica/exsystem.c
+++ b/drivers/acpi/acpica/exsystem.c
@@ -201,6 +201,14 @@ acpi_status acpi_ex_system_do_sleep(u64 how_long)
acpi_ex_relinquish_interpreter();
+ /*
+ * For compatibility with other ACPI implementations and to prevent
+ * accidental deep sleeps, limit the sleep time to something reasonable.
+ */
+ if (how_long > ACPI_MAX_SLEEP) {
+ how_long = ACPI_MAX_SLEEP;
+ }
+
acpi_os_sleep(how_long);
/* And now we must get the interpreter again */