accel/habanalabs: change hw_fini to return int to indicate error

We later use cpucp packet for soft reset which might fail
so we should be able propagate the failure case.
Signed-off-by: Dafna Hirschfeld <dhirschfeld@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>

drivers/accel/habanalabs/common/habanalabs.h

@@ -1576,7 +1576,7 @@ struct hl_asic_funcs {
 	int (*sw_init)(struct hl_device *hdev);
 	int (*sw_fini)(struct hl_device *hdev);
 	int (*hw_init)(struct hl_device *hdev);
-	void (*hw_fini)(struct hl_device *hdev, bool hard_reset, bool fw_reset);
+	int (*hw_fini)(struct hl_device *hdev, bool hard_reset, bool fw_reset);
 	void (*halt_engines)(struct hl_device *hdev, bool hard_reset, bool fw_reset);
 	int (*suspend)(struct hl_device *hdev);
 	int (*resume)(struct hl_device *hdev);

drivers/accel/habanalabs/gaudi/gaudi.c

@@ -4069,7 +4069,7 @@ static int gaudi_hw_init(struct hl_device *hdev)
 	return rc;
 }
 
-static void gaudi_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
+static int gaudi_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
 {
 	struct cpu_dyn_regs *dyn_regs =
 			&hdev->fw_loader.dynamic_loader.comm_desc.cpu_dyn_regs;
@@ -4079,7 +4079,7 @@ static void gaudi_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset
 
 	if (!hard_reset) {
 		dev_err(hdev->dev, "GAUDI doesn't support soft-reset\n");
-		return;
+		return 0;
 	}
 
 	if (hdev->pldm) {
@@ -4216,6 +4216,7 @@ static void gaudi_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset
 
 		hdev->device_cpu_is_halted = false;
 	}
+	return 0;
 }
 
 static int gaudi_suspend(struct hl_device *hdev)

drivers/accel/habanalabs/gaudi2/gaudi2.c

@@ -5885,7 +5885,7 @@ static void gaudi2_get_soft_rst_done_indication(struct hl_device *hdev, u32 poll
 				reg_val);
 }
 
-static void gaudi2_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
+static int gaudi2_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
 {
 	struct gaudi2_device *gaudi2 = hdev->asic_specific;
 	u32 poll_timeout_us, reset_sleep_ms;
@@ -5951,7 +5951,7 @@ static void gaudi2_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_rese
 		gaudi2_get_soft_rst_done_indication(hdev, poll_timeout_us);
 
 	if (!gaudi2)
-		return;
+		return 0;
 
 	gaudi2->dec_hw_cap_initialized &= ~(HW_CAP_DEC_MASK);
 	gaudi2->tpc_hw_cap_initialized &= ~(HW_CAP_TPC_MASK);
@@ -5978,6 +5978,7 @@ static void gaudi2_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_rese
 			HW_CAP_PDMA_MASK | HW_CAP_EDMA_MASK | HW_CAP_MME_MASK |
 			HW_CAP_ROT_MASK);
 	}
+	return 0;
 }
 
 static int gaudi2_suspend(struct hl_device *hdev)

drivers/accel/habanalabs/goya/goya.c

@@ -2783,7 +2783,7 @@ static int goya_hw_init(struct hl_device *hdev)
 	return rc;
 }
 
-static void goya_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
+static int goya_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
 {
 	struct goya_device *goya = hdev->asic_specific;
 	u32 reset_timeout_ms, cpu_timeout_ms, status;
@@ -2839,7 +2839,7 @@ static void goya_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
 						HW_CAP_GOLDEN | HW_CAP_TPC);
 		WREG32(mmGIC_DISTRIBUTOR__5_GICD_SETSPI_NSR,
 				GOYA_ASYNC_EVENT_ID_SOFT_RESET);
-		return;
+		return 0;
 	}
 
 	/* Chicken bit to re-initiate boot sequencer flow */
@@ -2858,6 +2858,7 @@ static void goya_hw_fini(struct hl_device *hdev, bool hard_reset, bool fw_reset)
 
 		memset(goya->events_stat, 0, sizeof(goya->events_stat));
 	}
+	return 0;
 }
 
 int goya_suspend(struct hl_device *hdev)