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Add radeon suspend/resume quirk for HP Compaq dc5750.

commit 09bfda1 upstream.

With the radeon driver loaded the HP Compaq dc5750
Small Form Factor machine fails to resume from suspend.
Adding a quirk similar to other devices avoids
the problem and the system resumes properly.

Signed-off-by: Jeffery Miller <>
Signed-off-by: Alex Deucher <>
Signed-off-by: Greg Kroah-Hartman <>
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jefferymiller authored and gregkh committed Sep 1, 2015
1 parent c158931 commit a75c632bfbd637a80832511b91ab4f46cbc88175
Showing with 8 additions and 0 deletions.
  1. +8 −0 drivers/gpu/drm/radeon/radeon_combios.c
@@ -3387,6 +3387,14 @@ void radeon_combios_asic_init(struct drm_device *dev)
rdev->pdev->subsystem_device == 0x30ae)

/* quirk for rs4xx HP Compaq dc5750 Small Form Factor to make it resume
* - it hangs on resume inside the dynclk 1 table.
if (rdev->family == CHIP_RS480 &&
rdev->pdev->subsystem_vendor == 0x103c &&
rdev->pdev->subsystem_device == 0x280a)

/* DYN CLK 1 */
table = combios_get_table_offset(dev, COMBIOS_DYN_CLK_1_TABLE);
if (table)

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