drm/amd/powerplay: pre-check the SMU state before issuing message

[linux.git] / drivers / gpu / drm / amd / powerplay / smu_v12_0.c

diff --git a/drivers/gpu/drm/amd/powerplay/smu_v12_0.c b/drivers/gpu/drm/amd/powerplay/smu_v12_0.c
index 269a7d73b58d7ba5e108d5b41dabf19558a6d05e..951aa4570a04105c3f8af554e723567973fcb686 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/smu_v12_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v12_0.c
@@ -66,15 +66,13 @@ int smu_v12_0_wait_for_response(struct smu_context *smu)
        for (i = 0; i < adev->usec_timeout; i++) {
                cur_value = RREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_90);
                if ((cur_value & MP1_C2PMSG_90__CONTENT_MASK) != 0)
-                       break;
+                       return cur_value == 0x1 ? 0 : -EIO;
+
                udelay(1);
        }
 
        /* timeout means wrong logic */
-       if (i == adev->usec_timeout)
-               return -ETIME;
-
-       return RREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_90) == 0x1 ? 0 : -EIO;
+       return -ETIME;
 }
 
 int
@@ -90,9 +88,11 @@ smu_v12_0_send_msg_with_param(struct smu_context *smu,
                return index;
 
        ret = smu_v12_0_wait_for_response(smu);
-       if (ret)
-               pr_err("Failed to send message 0x%x, response 0x%x, param 0x%x\n",
-                      index, ret, param);
+       if (ret) {
+               pr_err("Msg issuing pre-check failed and "
+                      "SMU may be not in the right state!\n");
+               return ret;
+       }
 
        WREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_90, 0);