[PATCH][V2] ACPI / blacklist: add _REV quirks for Dell Precision 5520 and 3520

[Alex Hung]

Precision 5520 and 3520 either hang at login and during suspend or reboot.

It turns out that that adding them to acpi_rev_dmi_table[] helps to work
around those issues.

Signed-off-by: Alex Hung <alex.hung at canonical.com>
[ rjw: Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>

(cherry picked from commit 9523b9bf6dceef6b0215e90b2348cd646597f796)
Signed-off-by: Alex Hung <alex.hung at canonical.com>
---
 drivers/acpi/blacklist.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 94e4390..8f4f198 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -429,6 +429,22 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
 		      DMI_MATCH(DMI_PRODUCT_NAME, "Latitude 3350"),
 		},
 	},
+	{
+	 .callback = dmi_enable_rev_override,
+	 .ident = "DELL Precision 5520",
+	 .matches = {
+		      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		      DMI_MATCH(DMI_PRODUCT_NAME, "Precision 5520"),
+		},
+	},
+	{
+	 .callback = dmi_enable_rev_override,
+	 .ident = "DELL Precision 3520",
+	 .matches = {
+		      DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+		      DMI_MATCH(DMI_PRODUCT_NAME, "Precision 3520"),
+		},
+	},
 #endif
 	{}
 };
-- 
2.9.3