[PATCH 4.4 14/26] drm/radeon: add a quirk for Toshiba Satellite L20-183

Greg Kroah-Hartman
2017-06-27T12:56:01Z

From: Alex Deucher <alexander.deucher@amd.com>

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/gpu/drm/radeon/radeon_combios.c | 7 +++++++
1 file changed, 7 insertions(+)

--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -3394,6 +3394,13 @@ void radeon_combios_asic_init(struct drm
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);