[PATCH] drm/amdgpu: Remove all code paths under the EAGAIN path in RAS late init

[Clements, John]

[AMD Official Use Only]

Reviewed-by: John Clements <john.clements at amd.com>

-----Original Message-----
From: Li, Candice <Candice.Li at amd.com> 
Sent: Thursday, September 23, 2021 5:12 PM
To: amd-gfx at lists.freedesktop.org
Cc: Clements, John <John.Clements at amd.com>; Li, Candice <Candice.Li at amd.com>
Subject: [PATCH] drm/amdgpu: Remove all code paths under the EAGAIN path in RAS late init

All code paths under the EAGAIN path in RAS late init are unused.

Signed-off-by: Candice Li <candice.li at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 33 +------------------------  drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h |  3 ---
 2 files changed, 1 insertion(+), 35 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index b5332db4d28730..6cf5f6e06b76ad 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -2060,19 +2060,6 @@ static int amdgpu_ras_recovery_fini(struct amdgpu_device *adev)  }
 /* recovery end */
 
-/* return 0 if ras will reset gpu and repost.*/ -int amdgpu_ras_request_reset_on_boot(struct amdgpu_device *adev,
-		unsigned int block)
-{
-	struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
-
-	if (!ras)
-		return -EINVAL;
-
-	ras->flags |= AMDGPU_RAS_FLAG_INIT_NEED_RESET;
-	return 0;
-}
-
 static bool amdgpu_ras_asic_supported(struct amdgpu_device *adev)  {
 	return adev->asic_type == CHIP_VEGA10 || @@ -2310,12 +2297,7 @@ int amdgpu_ras_late_init(struct amdgpu_device *adev,
 
 	r = amdgpu_ras_feature_enable_on_boot(adev, ras_block, 1);
 	if (r) {
-		if (r == -EAGAIN) {
-			/* request gpu reset. will run again */
-			amdgpu_ras_request_reset_on_boot(adev,
-					ras_block->block);
-			return 0;
-		} else if (adev->in_suspend || amdgpu_in_reset(adev)) {
+		if (adev->in_suspend || amdgpu_in_reset(adev)) {
 			/* in resume phase, if fail to enable ras,
 			 * clean up all ras fs nodes, and disable ras */
 			goto cleanup;
@@ -2407,19 +2389,6 @@ void amdgpu_ras_resume(struct amdgpu_device *adev)
 			}
 		}
 	}
-
-	if (con->flags & AMDGPU_RAS_FLAG_INIT_NEED_RESET) {
-		con->flags &= ~AMDGPU_RAS_FLAG_INIT_NEED_RESET;
-		/* setup ras obj state as disabled.
-		 * for init_by_vbios case.
-		 * if we want to enable ras, just enable it in a normal way.
-		 * If we want do disable it, need setup ras obj as enabled,
-		 * then issue another TA disable cmd.
-		 * See feature_enable_on_boot
-		 */
-		amdgpu_ras_disable_all_features(adev, 1);
-		amdgpu_ras_reset_gpu(adev);
-	}
 }
 
 void amdgpu_ras_suspend(struct amdgpu_device *adev) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
index 1670467c205463..30a3eafbf6d095 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
@@ -32,7 +32,6 @@
 #include "amdgpu_ras_eeprom.h"
 
 #define AMDGPU_RAS_FLAG_INIT_BY_VBIOS		(0x1 << 0)
-#define AMDGPU_RAS_FLAG_INIT_NEED_RESET		(0x1 << 1)
 
 enum amdgpu_ras_block {
 	AMDGPU_RAS_BLOCK__UMC = 0,
@@ -488,8 +487,6 @@ static inline int amdgpu_ras_is_supported(struct amdgpu_device *adev,  }
 
 int amdgpu_ras_recovery_init(struct amdgpu_device *adev); -int amdgpu_ras_request_reset_on_boot(struct amdgpu_device *adev,
-		unsigned int block);
 
 void amdgpu_ras_resume(struct amdgpu_device *adev);  void amdgpu_ras_suspend(struct amdgpu_device *adev);
--
2.17.1