linux-kernel - [PATCH 1/8] habanalabs: fix rc when new CPUCP opcodes are not supported

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Date:   Wed, 23 Nov 2022 16:57:54 +0200
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Tomer Tayar <ttayar@...ana.ai>
Subject: [PATCH 1/8] habanalabs: fix rc when new CPUCP opcodes are not supported

From: Tomer Tayar <ttayar@...ana.ai>

When the new CPUCP opcodes are not supported and a CPUCP packet fails,
the return value is the F/W error resposone which is a positive value.
If this packet is sent from IOCTL and the positive value is used, the
ICOTL will not be considered as unsuccessful.

Signed-off-by: Tomer Tayar <ttayar@...ana.ai>
Reviewed-by: Oded Gabbay <ogabbay@...nel.org>
Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/common/firmware_if.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/misc/habanalabs/common/firmware_if.c b/drivers/misc/habanalabs/common/firmware_if.c
index c0909d76d6eb..cf8147e43833 100644
--- a/drivers/misc/habanalabs/common/firmware_if.c
+++ b/drivers/misc/habanalabs/common/firmware_if.c
@@ -324,6 +324,7 @@ int hl_fw_send_cpu_message(struct hl_device *hdev, u32 hw_queue_id, u32 *msg,
 
 		if (!prop->supports_advanced_cpucp_rc) {
 			dev_dbg(hdev->dev, "F/W ERROR %d for CPU packet %d\n", rc, opcode);
+			rc = -EIO;
 			goto scrub_descriptor;
 		}
 
-- 
2.25.1