In commit 821d6f0359b0 ("ACPI / sleep: Do not save NVS for new machines to
accelerate S3"), to optimize S3 suspend/resume speed, code is introduced
to ignore NVS memory saving during S3 for all the platforms later than
2012.
But, Lenovo G50-45, a platform released in 2015, still needs NVS memory
saving during S3. A quirk is introduced for this platform.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=189431
Tested-by: Przemek <soprwa@xxxxxxxxx>
Signed-off-by: Zhang Rui <rui.zhang@xxxxxxxxx>
---
drivers/acpi/sleep.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index 9b6cebe227a0..0804e63863b6 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -130,6 +130,17 @@ void __init acpi_nvs_nosave_s3(void)
nvs_nosave_s3 = true;
}
+void __init acpi_nvs_save_s3(void)
+{
+ nvs_nosave_s3 = false;
+}
+
+static int __init init_nvs_save_s3(const struct dmi_system_id *d)
+{
+ acpi_nvs_save_s3();
+ return 0;
+}
+
/*
* ACPI 1.0 wants us to execute _PTS before suspending devices, so we allow the
* user to request that behavior by using the 'acpi_old_suspend_ordering'
@@ -324,6 +335,19 @@ static struct dmi_system_id acpisleep_dmi_table[] __initdata = {
DMI_MATCH(DMI_PRODUCT_NAME, "K54HR"),
},
},
+ /*
+ * https://bugzilla.kernel.org/show_bug.cgi?id=189431
+ * Lenovo G50-45 is a platform later than 2012, but needs nvs memory
+ * saving during S3.
+ */
+ {
+ .callback = init_nvs_save_s3,
+ .ident = "Lenovo G50-45",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "80E3"),
+ },
+ },
{},
};
--
2.7.4
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