[PATCH] drm/amd/powerplay: check before issuing messages for max sustainable clocks

[Xu, Feifei]

Reviewed-by: Feifei Xu <Feifei.Xu at amd.com>

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Evan Quan
Sent: Tuesday, August 6, 2019 4:21 PM
To: amd-gfx at lists.freedesktop.org
Cc: Quan, Evan <Evan.Quan at amd.com>
Subject: [PATCH] drm/amd/powerplay: check before issuing messages for max sustainable clocks

Those messages are not supported on Arcturus and should not be issued.

Affected ASIC: Arcturus

Change-Id: I391099fc28e00356234fd2ae7b68f5861fd4c147
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index 84eb14a6650f..2ddb4ec75305 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -905,6 +905,10 @@ smu_v11_0_get_max_sustainable_clock(struct smu_context *smu, uint32_t *clock,
 	if (!smu->pm_enabled)
 		return ret;
 
+	if ((smu_msg_get_index(smu, SMU_MSG_GetDcModeMaxDpmFreq) < 0) ||
+	    (smu_msg_get_index(smu, SMU_MSG_GetMaxDpmFreq) < 0))
+		return 0;
+
 	clk_id = smu_clk_get_index(smu, clock_select);
 	if (clk_id < 0)
 		return -EINVAL;
--
2.22.0

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