linux-kernel - [PATCH 5.12 103/292] habanalabs: set rc as valid in case of intentional func exit

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Date:   Mon, 19 Jul 2021 16:52:45 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Koby Elbaz <kelbaz@...ana.ai>,
        Oded Gabbay <ogabbay@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.12 103/292] habanalabs: set rc as valid in case of intentional func exit

From: Koby Elbaz <kelbaz@...ana.ai>

[ Upstream commit 11d5cb8b95456e2432dfee2ffcebf0623998493a ]

fix the following smatch warnings:
hl_fw_static_init_cpu() warn: missing error code 'rc'

Signed-off-by: Koby Elbaz <kelbaz@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/misc/habanalabs/common/device.c      | 5 +++--
 drivers/misc/habanalabs/common/firmware_if.c | 5 ++++-
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index 334009e83823..b11e9830422e 100644
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -1370,8 +1370,9 @@ int hl_device_init(struct hl_device *hdev, struct class *hclass)
 	}
 
 	/*
-	 * From this point, in case of an error, add char devices and create
-	 * sysfs nodes as part of the error flow, to allow debugging.
+	 * From this point, override rc (=0) in case of an error to allow
+	 * debugging (by adding char devices and create sysfs nodes as part of
+	 * the error flow).
 	 */
 	add_cdev_sysfs_on_err = true;
 
diff --git a/drivers/misc/habanalabs/common/firmware_if.c b/drivers/misc/habanalabs/common/firmware_if.c
index 09706c571e95..7a96c9753dbf 100644
--- a/drivers/misc/habanalabs/common/firmware_if.c
+++ b/drivers/misc/habanalabs/common/firmware_if.c
@@ -803,11 +803,14 @@ int hl_fw_init_cpu(struct hl_device *hdev, u32 cpu_boot_status_reg,
 
 	if (!(hdev->fw_loading & FW_TYPE_LINUX)) {
 		dev_info(hdev->dev, "Skip loading Linux F/W\n");
+		rc = 0;
 		goto out;
 	}
 
-	if (status == CPU_BOOT_STATUS_SRAM_AVAIL)
+	if (status == CPU_BOOT_STATUS_SRAM_AVAIL) {
+		rc = 0;
 		goto out;
+	}
 
 	dev_info(hdev->dev,
 		"Loading firmware to device, may take some time...\n");
-- 
2.30.2