[PATCH] ACPI / PM: Blacklist Low Power S0 Idle _DSM for ThinkPad X1 Tablet(2016)

[Yu Chen]

From: Chen Yu <yu.c.c...@intel.com>

ThinkPad X1 Tablet(2016) is reported to have issues with
the Low Power S0 Idle _DSM interface and since this machine
model generally can do ACPI S3 just fine, and user would
like to use S3 as default sleep model, add a blacklist
entry to disable that interface for ThinkPad X1 Tablet(2016).

Reported-and-tested-by: Robin Lee <robinlee.s...@gmail.com>
Signed-off-by: Chen Yu <yu.c.c...@intel.com>
---
 drivers/acpi/sleep.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 46cde0912762..465f33aa0bd8 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -364,6 +364,19 @@ static const struct dmi_system_id acpisleep_dmi_table[] 
__initconst = {
                DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9360"),
                },
        },
+       /*
+        * https://bugzilla.kernel.org/show_bug.cgi?id=199057
+        * ThinkPad X1 Tablet(2016) cannot do suspend-to-idle using the Low 
Power
+        * S0 Idle firmware interface.
+        */
+       {
+       .callback = init_no_lps0,
+       .ident = "ThinkPad X1 Tablet(2016)",
+       .matches = {
+               DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+               DMI_MATCH(DMI_PRODUCT_NAME, "20GGA00L00"),
+               },
+       },
        {},
 };
 
-- 
2.13.6