[PATCH] drm/amd/powerplay: increase waiting time for smu response

[Zhang, Hawking]

Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>

Regards,
Hawking
-----Original Message-----
From: Xiao, Jack <Jack.Xiao at amd.com> 
Sent: 2019年7月3日 12:18
To: amd-gfx at lists.freedesktop.org; Deucher, Alexander <Alexander.Deucher at amd.com>; Zhang, Hawking <Hawking.Zhang at amd.com>
Cc: Xiao, Jack <Jack.Xiao at amd.com>
Subject: [PATCH] drm/amd/powerplay: increase waiting time for smu response

We observed some SMU commands take more time for execution, so increase waiting time for response.

Signed-off-by: Jack Xiao <Jack.Xiao at amd.com>
---
 drivers/gpu/drm/amd/powerplay/smu_v11_0.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index bc39690..88d3127 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -64,9 +64,9 @@ static int smu_v11_0_read_arg(struct smu_context *smu, uint32_t *arg)  static int smu_v11_0_wait_for_response(struct smu_context *smu)  {
 	struct amdgpu_device *adev = smu->adev;
-	uint32_t cur_value, i;
+	uint32_t cur_value, i, timeout = adev->usec_timeout * 10;
 
-	for (i = 0; i < adev->usec_timeout; i++) {
+	for (i = 0; i < timeout; i++) {
 		cur_value = RREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_90);
 		if ((cur_value & MP1_C2PMSG_90__CONTENT_MASK) != 0)
 			break;
@@ -74,7 +74,7 @@ static int smu_v11_0_wait_for_response(struct smu_context *smu)
 	}
 
 	/* timeout means wrong logic */
-	if (i == adev->usec_timeout)
+	if (i == timeout)
 		return -ETIME;
 
 	return RREG32_SOC15(MP1, 0, mmMP1_SMN_C2PMSG_90) == 0x1 ? 0 : -EIO;
--
1.9.1