linux-kernel - [PATCH 09/12] habanalabs: do not set max power on a secured device

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Date:   Mon,  4 Jul 2022 12:29:38 +0300
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Ofir Bitton <obitton@...ana.ai>
Subject: [PATCH 09/12] habanalabs: do not set max power on a secured device

From: Ofir Bitton <obitton@...ana.ai>

Max power API is not supported in secured devices. Hence, we should
skip setting it during boot.

Signed-off-by: Ofir Bitton <obitton@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/common/device.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index 9f3778c82e54..99d84b46aeb6 100644
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -1545,7 +1545,8 @@ int hl_device_reset(struct hl_device *hdev, u32 flags)
 			goto out_err;
 		}
 
-		hl_fw_set_max_power(hdev);
+		if (!hdev->asic_prop.fw_security_enabled)
+			hl_fw_set_max_power(hdev);
 	} else {
 		rc = hdev->asic_funcs->non_hard_reset_late_init(hdev);
 		if (rc) {
@@ -1914,7 +1915,8 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass)
 	/* Need to call this again because the max power might change,
 	 * depending on card type for certain ASICs
 	 */
-	if (hdev->asic_prop.set_max_power_on_device_init)
+	if (hdev->asic_prop.set_max_power_on_device_init &&
+			!hdev->asic_prop.fw_security_enabled)
 		hl_fw_set_max_power(hdev);
 
 	/*
-- 
2.25.1