drm/radeon: add a quirk for Toshiba Satellite L20-183

commit acfd6ee4fa7ebeee75511825fe02be3f7ac1d668 upstream.

Fixes resume from suspend.

bug: https://bugzilla.kernel.org/show_bug.cgi?id=196121
Reported-by: Przemek <soprwa@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index 87a677e91927e7694cc918ef7c05311da50824f1..9ac606fffc0a90088b39c442f711debbefd0e274 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -3406,6 +3406,13 @@ void radeon_combios_asic_init(struct drm_device *dev)
            rdev->pdev->subsystem_vendor == 0x103c &&
            rdev->pdev->subsystem_device == 0x280a)
                return;
+       /* quirk for rs4xx Toshiba Sattellite L20-183 latop to make it resume
+        * - it hangs on resume inside the dynclk 1 table.
+        */
+       if (rdev->family == CHIP_RS400 &&
+           rdev->pdev->subsystem_vendor == 0x1179 &&
+           rdev->pdev->subsystem_device == 0xff31)
+               return;
 
        /* DYN CLK 1 */
        table = combios_get_table_offset(dev, COMBIOS_DYN_CLK_1_TABLE);