ACPI / PM: Blacklist Low Power S0 Idle _DSM for Dell XPS13 9360

At least one Dell XPS13 9360 is reported to have serious issues with
the Low Power S0 Idle _DSM interface and since this machine model
generally can do ACPI S3 just fine, add a blacklist entry to disable
that interface for Dell XPS13 9360.

Fixes: 8110dd281e15 (ACPI / sleep: EC-based wakeup from suspend-to-idle on recent systems)
Link: https://bugzilla.kernel.org/show_bug.cgi?id=196907
Reported-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: 4.13+ <stable@vger.kernel.org> # 4.13+

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 6804ddab3052962d28e5e4954ab0c4e830675de4..8082871b409a6d631a80b5d2327e9fcb6a1509d4 100644 (file)
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -160,6 +160,14 @@ static int __init init_nvs_nosave(const struct dmi_system_id *d)
        return 0;
 }
 
+static bool acpi_sleep_no_lps0;
+
+static int __init init_no_lps0(const struct dmi_system_id *d)
+{
+       acpi_sleep_no_lps0 = true;
+       return 0;
+}
+
 static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
        {
        .callback = init_old_suspend_ordering,
@@ -343,6 +351,19 @@ static const struct dmi_system_id acpisleep_dmi_table[] __initconst = {
                DMI_MATCH(DMI_PRODUCT_NAME, "80E3"),
                },
        },
+       /*
+        * https://bugzilla.kernel.org/show_bug.cgi?id=196907
+        * Some Dell XPS13 9360 cannot do suspend-to-idle using the Low Power
+        * S0 Idle firmware interface.
+        */
+       {
+       .callback = init_no_lps0,
+       .ident = "Dell XPS13 9360",
+       .matches = {
+               DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+               DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
+               },
+       },
        {},
 };
 
@@ -485,6 +506,7 @@ static void acpi_pm_end(void)
 }
 #else /* !CONFIG_ACPI_SLEEP */
 #define acpi_target_sleep_state        ACPI_STATE_S0
+#define acpi_sleep_no_lps0     (false)
 static inline void acpi_sleep_dmi_check(void) {}
 #endif /* CONFIG_ACPI_SLEEP */
 
@@ -863,6 +885,12 @@ static int lps0_device_attach(struct acpi_device *adev,
        if (lps0_device_handle)
                return 0;
 
+       if (acpi_sleep_no_lps0) {
+               acpi_handle_info(adev->handle,
+                                "Low Power S0 Idle interface disabled\n");
+               return 0;
+       }
+
        if (!(acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0))
                return 0;