[PATCH 1/2] drm/amd/powerplay/hwmgr: prevent VDDC from exceeding 2V
Moritz Kühner
kuehner.moritz at gmail.com
Thu Apr 14 20:10:27 UTC 2016
If the tonga gpu is controlled by SVID2 tonga_get_evv_voltage will only print
an error if the voltage exceeds 2V although a comment clearly states that it
needs be less than 2V.
---
drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
index 0d5d837..50afb02 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
@@ -455,8 +455,7 @@ int tonga_get_evv_voltage(struct pp_hwmgr *hwmgr)
"Error retrieving EVV voltage value!", continue);
/* need to make sure vddc is less than 2v or else, it could burn the ASIC. */
- if (vddc > 2000)
- printk(KERN_ERR "[ powerplay ] Invalid VDDC value! \n");
+ PP_ASSERT_WITH_CODE(vddc < 2000, "Invalid VDDC value!", return -1);
/* the voltage should not be zero nor equal to leakage ID */
if (vddc != 0 && vddc != virtual_voltage_id) {
--
2.7.4
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