linux-kernel - [PATCH 22/30] habanalabs: fix soft reset flow in case of failure

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Date:   Sat, 22 Jan 2022 21:57:23 +0200
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Dani Liberman <dliberman@...ana.ai>
Subject: [PATCH 22/30] habanalabs: fix soft reset flow in case of failure

From: Dani Liberman <dliberman@...ana.ai>

In case of soft reset failure, hard reset should be initiated, but
reset flags were not set to enable it, which caused another soft reset
followed by another failure.
Updated reset flags to enable hard reset flow in case of soft reset
failure.

Signed-off-by: Dani Liberman <dliberman@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/common/device.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index c98a0a81e7d5..727315b36b8b 100644
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -1293,11 +1293,14 @@ int hl_device_reset(struct hl_device *hdev, u32 flags)
 		hdev->reset_info.hard_reset_cnt++;
 	} else if (reset_upon_device_release) {
 		dev_err(hdev->dev, "Failed to reset device after user release\n");
+		flags |= HL_DRV_RESET_HARD;
+		flags &= ~HL_DRV_RESET_DEV_RELEASE;
 		hard_reset = true;
 		goto again;
 	} else {
 		dev_err(hdev->dev, "Failed to do soft-reset\n");
 		hdev->reset_info.soft_reset_cnt++;
+		flags |= HL_DRV_RESET_HARD;
 		hard_reset = true;
 		goto again;
 	}
-- 
2.25.1