linux-kernel - [PATCH] habanalabs: handle F/W failure for sensor initialization

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Date:   Mon, 16 Sep 2019 11:56:26 +0300
From:   Oded Gabbay <oded.gabbay@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org
Subject: [PATCH] habanalabs: handle F/W failure for sensor initialization

In case the F/W fails to initialize the thermal sensors, print an
appropriate error message to kernel log and fail the device
initialization.

Signed-off-by: Oded Gabbay <oded.gabbay@...il.com>
---
 drivers/misc/habanalabs/goya/goya.c          | 5 +++++
 drivers/misc/habanalabs/include/hl_boot_if.h | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index 6fba14b81f90..09caef7642fd 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -2328,6 +2328,11 @@ static int goya_init_cpu(struct hl_device *hdev, u32 cpu_timeout)
 				"ARM status %d - u-boot stopped by user\n",
 				status);
 			break;
+		case CPU_BOOT_STATUS_TS_INIT_FAIL:
+			dev_err(hdev->dev,
+				"ARM status %d - Thermal Sensor initialization failed\n",
+				status);
+			break;
 		default:
 			dev_err(hdev->dev,
 				"ARM status %d - Invalid status code\n",
diff --git a/drivers/misc/habanalabs/include/hl_boot_if.h b/drivers/misc/habanalabs/include/hl_boot_if.h
index 4cd04c090285..2853a2de8cf6 100644
--- a/drivers/misc/habanalabs/include/hl_boot_if.h
+++ b/drivers/misc/habanalabs/include/hl_boot_if.h
@@ -20,6 +20,8 @@ enum cpu_boot_status {
 	CPU_BOOT_STATUS_DRAM_INIT_FAIL,
 	CPU_BOOT_STATUS_FIT_CORRUPTED,
 	CPU_BOOT_STATUS_UBOOT_NOT_READY,
+	CPU_BOOT_STATUS_RESERVED,
+	CPU_BOOT_STATUS_TS_INIT_FAIL,
 };
 
 enum kmd_msg {
-- 
2.17.1