[PATCH] drm/amdgpu: fix sysfs interface pcie_replay_count error on navi asic

[Wang, Kevin(Yang)]

the asic callback function of get_pcie_replay_count is not implement on navi asic,
it will cause null pinter error when read this interface.

Signed-off-by: Kevin Wang <kevin1.wang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/nv.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/nv.c b/drivers/gpu/drm/amd/amdgpu/nv.c
index a55a2e83fb19..af68f9815f28 100644
--- a/drivers/gpu/drm/amd/amdgpu/nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/nv.c
@@ -539,6 +539,16 @@ static bool nv_need_reset_on_init(struct amdgpu_device *adev)
 	return false;
 }
 
+static uint64_t nv_get_pcie_replay_count(struct amdgpu_device *adev)
+{
+
+	/* TODO
+	 * dummy implement for pcie_replay_count sysfs interface
+	 * */
+
+	return 0;
+}
+
 static void nv_init_doorbell_index(struct amdgpu_device *adev)
 {
 	adev->doorbell_index.kiq = AMDGPU_NAVI10_DOORBELL_KIQ;
@@ -586,6 +596,7 @@ static const struct amdgpu_asic_funcs nv_asic_funcs =
 	.need_full_reset = &nv_need_full_reset,
 	.get_pcie_usage = &nv_get_pcie_usage,
 	.need_reset_on_init = &nv_need_reset_on_init,
+	.get_pcie_replay_count = &nv_get_pcie_replay_count,
 };
 
 static int nv_common_early_init(void *handle)
-- 
2.17.1