--- zzzz-none-000/linux-3.10.107/fs/efs/inode.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/efs/inode.c	2021-02-04 17:41:59.000000000 +0000
@@ -57,7 +57,7 @@
 	struct inode *inode;
 
 	inode = iget_locked(super, ino);
-	if (IS_ERR(inode))
+	if (!inode)
 		return ERR_PTR(-ENOMEM);
 	if (!(inode->i_state & I_NEW))
 		return inode;
@@ -89,7 +89,7 @@
 
 	bh = sb_bread(inode->i_sb, block);
 	if (!bh) {
-		printk(KERN_WARNING "EFS: bread() failed at block %d\n", block);
+		pr_warn("%s() failed at block %d\n", __func__, block);
 		goto read_inode_error;
 	}
 
@@ -130,19 +130,16 @@
 	for(i = 0; i < EFS_DIRECTEXTENTS; i++) {
 		extent_copy(&(efs_inode->di_u.di_extents[i]), &(in->extents[i]));
 		if (i < in->numextents && in->extents[i].cooked.ex_magic != 0) {
-			printk(KERN_WARNING "EFS: extent %d has bad magic number in inode %lu\n", i, inode->i_ino);
+			pr_warn("extent %d has bad magic number in inode %lu\n",
+				i, inode->i_ino);
 			brelse(bh);
 			goto read_inode_error;
 		}
 	}
 
 	brelse(bh);
-   
-#ifdef DEBUG
-	printk(KERN_DEBUG "EFS: efs_iget(): inode %lu, extents %d, mode %o\n",
-		inode->i_ino, in->numextents, inode->i_mode);
-#endif
-
+	pr_debug("efs_iget(): inode %lu, extents %d, mode %o\n",
+		 inode->i_ino, in->numextents, inode->i_mode);
 	switch (inode->i_mode & S_IFMT) {
 		case S_IFDIR: 
 			inode->i_op = &efs_dir_inode_operations; 
@@ -162,7 +159,7 @@
 			init_special_inode(inode, inode->i_mode, device);
 			break;
 		default:
-			printk(KERN_WARNING "EFS: unsupported inode mode %o\n", inode->i_mode);
+			pr_warn("unsupported inode mode %o\n", inode->i_mode);
 			goto read_inode_error;
 			break;
 	}
@@ -171,7 +168,7 @@
 	return inode;
         
 read_inode_error:
-	printk(KERN_WARNING "EFS: failed to read inode %lu\n", inode->i_ino);
+	pr_warn("failed to read inode %lu\n", inode->i_ino);
 	iget_failed(inode);
 	return ERR_PTR(-EIO);
 }
@@ -216,7 +213,7 @@
     
 		/* if we only have one extent then nothing can be found */
 		if (in->numextents == 1) {
-			printk(KERN_ERR "EFS: map_block() failed to map (1 extent)\n");
+			pr_err("%s() failed to map (1 extent)\n", __func__);
 			return 0;
 		}
 
@@ -234,13 +231,12 @@
 			}
 		}
 
-		printk(KERN_ERR "EFS: map_block() failed to map block %u (dir)\n", block);
+		pr_err("%s() failed to map block %u (dir)\n", __func__, block);
 		return 0;
 	}
 
-#ifdef DEBUG
-	printk(KERN_DEBUG "EFS: map_block(): indirect search for logical block %u\n", block);
-#endif
+	pr_debug("%s(): indirect search for logical block %u\n",
+		 __func__, block);
 	direxts = in->extents[0].cooked.ex_offset;
 	indexts = in->numextents;
 
@@ -262,7 +258,8 @@
 
 		if (dirext == direxts) {
 			/* should never happen */
-			printk(KERN_ERR "EFS: couldn't find direct extent for indirect extent %d (block %u)\n", cur, block);
+			pr_err("couldn't find direct extent for indirect extent %d (block %u)\n",
+			       cur, block);
 			if (bh) brelse(bh);
 			return 0;
 		}
@@ -279,12 +276,12 @@
 
 			bh = sb_bread(inode->i_sb, iblock);
 			if (!bh) {
-				printk(KERN_ERR "EFS: bread() failed at block %d\n", iblock);
+				pr_err("%s() failed at block %d\n",
+				       __func__, iblock);
 				return 0;
 			}
-#ifdef DEBUG
-			printk(KERN_DEBUG "EFS: map_block(): read indirect extent block %d\n", iblock);
-#endif
+			pr_debug("%s(): read indirect extent block %d\n",
+				 __func__, iblock);
 			first = 0;
 			lastblock = iblock;
 		}
@@ -294,7 +291,8 @@
 		extent_copy(&(exts[ioffset]), &ext);
 
 		if (ext.cooked.ex_magic != 0) {
-			printk(KERN_ERR "EFS: extent %d has bad magic number in block %d\n", cur, iblock);
+			pr_err("extent %d has bad magic number in block %d\n",
+			       cur, iblock);
 			if (bh) brelse(bh);
 			return 0;
 		}
@@ -306,7 +304,7 @@
 		}
 	}
 	if (bh) brelse(bh);
-	printk(KERN_ERR "EFS: map_block() failed to map block %u (indir)\n", block);
+	pr_err("%s() failed to map block %u (indir)\n", __func__, block);
 	return 0;
 }