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FAILED: patch "[PATCH] net: hns3: fix data endian problem of some functions of" failed to apply to 5.4-stable tree

PATCH [email protected] 1 participant 1 message Oct 30, 2021

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Network drivers Stable branch HiSilicon network subsystem driver HiSilicon network subsystem 3 driver (HNS3)
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The patch below does not apply to the 5.4-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 2a21dab594a98c338c4bfbc31864cbca15888549 Mon Sep 17 00:00:00 2001
From: Jie Wang <[email protected]>
Date: Wed, 27 Oct 2021 20:11:46 +0800
Subject: [PATCH] net: hns3: fix data endian problem of some functions of
debugfs

The member data in struct hclge_desc is type of __le32, it needs endian conversion before using it, and some functions of debugfs didn't do that, so this patch fixes it.

Fixes c0ebebb9ccc1 ("net: hns3: Add "dcb register" status information query function")
Signed-off-by Jie Wang <[email protected]>
Signed-off-by Guangbin Huang <[email protected]>
Signed-off-by David S. Miller <[email protected]>
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c +14 -16
index 32f62cd2dd99..9cda8b3562b8 100644
@@ -391,7 +391,7 @@ static int hclge_dbg_dump_mac(struct hclge_dev *hdev, char *buf, int len)
 static int hclge_dbg_dump_dcb_qset(struct hclge_dev *hdev, char *buf, int len,
 				   int *pos)
 {
-	struct hclge_dbg_bitmap_cmd *bitmap;
+	struct hclge_dbg_bitmap_cmd req;
 	struct hclge_desc desc;
 	u16 qset_id, qset_num;
 	int ret;

@@ -408,12 +408,12 @@ static int hclge_dbg_dump_dcb_qset(struct hclge_dev *hdev, char *buf, int len,
 		if (ret)
 			return ret;
 
-		bitmap = (struct hclge_dbg_bitmap_cmd *)&desc.data[1];
+		req.bitmap = (u8)le32_to_cpu(desc.data[1]);
 
 		*pos += scnprintf(buf + *pos, len - *pos,
 				  "%04u           %#x            %#x             %#x               %#x\n",
-				  qset_id, bitmap->bit0, bitmap->bit1,
-				  bitmap->bit2, bitmap->bit3);
+				  qset_id, req.bit0, req.bit1, req.bit2,
+				  req.bit3);
 	}
 
 	return 0;

@@ -422,7 +422,7 @@ static int hclge_dbg_dump_dcb_qset(struct hclge_dev *hdev, char *buf, int len,
 static int hclge_dbg_dump_dcb_pri(struct hclge_dev *hdev, char *buf, int len,
 				  int *pos)
 {
-	struct hclge_dbg_bitmap_cmd *bitmap;
+	struct hclge_dbg_bitmap_cmd req;
 	struct hclge_desc desc;
 	u8 pri_id, pri_num;
 	int ret;

@@ -439,12 +439,11 @@ static int hclge_dbg_dump_dcb_pri(struct hclge_dev *hdev, char *buf, int len,
 		if (ret)
 			return ret;
 
-		bitmap = (struct hclge_dbg_bitmap_cmd *)&desc.data[1];
+		req.bitmap = (u8)le32_to_cpu(desc.data[1]);
 
 		*pos += scnprintf(buf + *pos, len - *pos,
 				  "%03u       %#x           %#x                %#x\n",
-				  pri_id, bitmap->bit0, bitmap->bit1,
-				  bitmap->bit2);
+				  pri_id, req.bit0, req.bit1, req.bit2);
 	}
 
 	return 0;

@@ -453,7 +452,7 @@ static int hclge_dbg_dump_dcb_pri(struct hclge_dev *hdev, char *buf, int len,
 static int hclge_dbg_dump_dcb_pg(struct hclge_dev *hdev, char *buf, int len,
 				 int *pos)
 {
-	struct hclge_dbg_bitmap_cmd *bitmap;
+	struct hclge_dbg_bitmap_cmd req;
 	struct hclge_desc desc;
 	u8 pg_id;
 	int ret;

@@ -466,12 +465,11 @@ static int hclge_dbg_dump_dcb_pg(struct hclge_dev *hdev, char *buf, int len,
 		if (ret)
 			return ret;
 
-		bitmap = (struct hclge_dbg_bitmap_cmd *)&desc.data[1];
+		req.bitmap = (u8)le32_to_cpu(desc.data[1]);
 
 		*pos += scnprintf(buf + *pos, len - *pos,
 				  "%03u      %#x           %#x               %#x\n",
-				  pg_id, bitmap->bit0, bitmap->bit1,
-				  bitmap->bit2);
+				  pg_id, req.bit0, req.bit1, req.bit2);
 	}
 
 	return 0;

@@ -511,7 +509,7 @@ static int hclge_dbg_dump_dcb_queue(struct hclge_dev *hdev, char *buf, int len,
 static int hclge_dbg_dump_dcb_port(struct hclge_dev *hdev, char *buf, int len,
 				   int *pos)
 {
-	struct hclge_dbg_bitmap_cmd *bitmap;
+	struct hclge_dbg_bitmap_cmd req;
 	struct hclge_desc desc;
 	u8 port_id = 0;
 	int ret;

@@ -521,12 +519,12 @@ static int hclge_dbg_dump_dcb_port(struct hclge_dev *hdev, char *buf, int len,
 	if (ret)
 		return ret;
 
-	bitmap = (struct hclge_dbg_bitmap_cmd *)&desc.data[1];
+	req.bitmap = (u8)le32_to_cpu(desc.data[1]);
 
 	*pos += scnprintf(buf + *pos, len - *pos, "port_mask: %#x\n",
-			 bitmap->bit0);
+			 req.bit0);
 	*pos += scnprintf(buf + *pos, len - *pos, "port_shaping_pass: %#x\n",
-			 bitmap->bit1);
+			 req.bit1);
 
 	return 0;
 }