linux-kernel - [PATCH 2/3] habanalabs: remove condition that is always true

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Date:   Wed,  1 May 2019 20:44:39 +0300
From:   Oded Gabbay <oded.gabbay@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     gregkh@...uxfoundation.org, Dalit Ben Zoor <dbenzoor@...ana.ai>
Subject: [PATCH 2/3] habanalabs: remove condition that is always true

From: Dalit Ben Zoor <dbenzoor@...ana.ai>

After removing the parsing of the command submission
when doing memset of the device memory, goya_validate_dma_pkt_host
is never called by the kernel, so there is no need to check
context id.

Signed-off-by: Dalit Ben Zoor <dbenzoor@...ana.ai>
Signed-off-by: Oded Gabbay <oded.gabbay@...il.com>
---
 drivers/misc/habanalabs/goya/goya.c | 48 ++++++++++++++---------------
 1 file changed, 23 insertions(+), 25 deletions(-)

diff --git a/drivers/misc/habanalabs/goya/goya.c b/drivers/misc/habanalabs/goya/goya.c
index ba6790f9ec6b..9bf572a2d292 100644
--- a/drivers/misc/habanalabs/goya/goya.c
+++ b/drivers/misc/habanalabs/goya/goya.c
@@ -3213,31 +3213,29 @@ static int goya_validate_dma_pkt_host(struct hl_device *hdev,
 		return -EFAULT;
 	}
 
-	if (parser->ctx_id != HL_KERNEL_ASID_ID) {
-		if (sram_addr) {
-			if (!hl_mem_area_inside_range(device_memory_addr,
-					le32_to_cpu(user_dma_pkt->tsize),
-					hdev->asic_prop.sram_user_base_address,
-					hdev->asic_prop.sram_end_address)) {
-
-				dev_err(hdev->dev,
-					"SRAM address 0x%llx + 0x%x is invalid\n",
-					device_memory_addr,
-					user_dma_pkt->tsize);
-				return -EFAULT;
-			}
-		} else {
-			if (!hl_mem_area_inside_range(device_memory_addr,
-					le32_to_cpu(user_dma_pkt->tsize),
-					hdev->asic_prop.dram_user_base_address,
-					hdev->asic_prop.dram_end_address)) {
-
-				dev_err(hdev->dev,
-					"DRAM address 0x%llx + 0x%x is invalid\n",
-					device_memory_addr,
-					user_dma_pkt->tsize);
-				return -EFAULT;
-			}
+	if (sram_addr) {
+		if (!hl_mem_area_inside_range(device_memory_addr,
+				le32_to_cpu(user_dma_pkt->tsize),
+				hdev->asic_prop.sram_user_base_address,
+				hdev->asic_prop.sram_end_address)) {
+
+			dev_err(hdev->dev,
+				"SRAM address 0x%llx + 0x%x is invalid\n",
+				device_memory_addr,
+				user_dma_pkt->tsize);
+			return -EFAULT;
+		}
+	} else {
+		if (!hl_mem_area_inside_range(device_memory_addr,
+				le32_to_cpu(user_dma_pkt->tsize),
+				hdev->asic_prop.dram_user_base_address,
+				hdev->asic_prop.dram_end_address)) {
+
+			dev_err(hdev->dev,
+				"DRAM address 0x%llx + 0x%x is invalid\n",
+				device_memory_addr,
+				user_dma_pkt->tsize);
+			return -EFAULT;
 		}
 	}
 
-- 
2.17.1