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[PATCH 3.16 204/233] drm/radeon: add a quirk for Toshiba Satellite L20-183

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  [PATCH 3.16 204/233] drm/radeon: add a quirk for Toshiba  Satellite L20-183 Ben Hutchings <ben@decadent.org.uk> - 2017-09-10 01:40 +0200

#1729869 — [PATCH 3.16 204/233] drm/radeon: add a quirk for Toshiba Satellite L20-183

3.16.48-rc1 review patch.  If anyone has any objections, please let me know.

------------------

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: Ben Hutchings <ben@decadent.org.uk>
---
 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);

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