[PATCH] drm/radeon/kms/combios: fix dynamic allocation of PM clock modes

[alexdeuc...@gmail.com]

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

I missed the combios path when I updated the atombios pm code.

Reported by amarsh04 on IRC.

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/radeon/radeon_combios.c |   27 +++++++++++++++++++--------
 1 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c 
b/drivers/gpu/drm/radeon/radeon_combios.c
index 8bf83c4..81fc100 100644
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -2563,14 +2563,17 @@ void radeon_combios_get_power_modes(struct 
radeon_device *rdev)

        /* allocate 2 power states */
        rdev->pm.power_state = kzalloc(sizeof(struct radeon_power_state) * 2, 
GFP_KERNEL);
-       if (!rdev->pm.power_state) {
-               rdev->pm.default_power_state_index = state_index;
-               rdev->pm.num_power_states = 0;
-
-               rdev->pm.current_power_state_index = 
rdev->pm.default_power_state_index;
-               rdev->pm.current_clock_mode_index = 0;
-               return;
-       }
+       if (rdev->pm.power_state) {
+               /* allocate 1 clock mode per state */
+               rdev->pm.power_state[0].clock_info =
+                       kzalloc(sizeof(struct radeon_pm_clock_info) * 1, 
GFP_KERNEL);
+               rdev->pm.power_state[1].clock_info =
+                       kzalloc(sizeof(struct radeon_pm_clock_info) * 1, 
GFP_KERNEL);
+               if (!rdev->pm.power_state[0].clock_info ||
+                   !rdev->pm.power_state[1].clock_info)
+                       goto pm_failed;
+       } else
+               goto pm_failed;

        /* check for a thermal chip */
        offset = combios_get_table_offset(dev, COMBIOS_OVERDRIVE_INFO_TABLE);
@@ -2735,6 +2738,14 @@ default_mode:

        rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
        rdev->pm.current_clock_mode_index = 0;
+       return;
+
+pm_failed:
+       rdev->pm.default_power_state_index = state_index;
+       rdev->pm.num_power_states = 0;
+
+       rdev->pm.current_power_state_index = rdev->pm.default_power_state_index;
+       rdev->pm.current_clock_mode_index = 0;
 }

 void radeon_external_tmds_setup(struct drm_encoder *encoder)
-- 
1.7.3.4