add boot partition size

hc

2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d

 kernel/drivers/iommu/omap-iommu-debug.c
..
..
@@ -1,13 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * omap iommu: debugfs interface
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  *
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  * Copyright (C) 2008-2009 Nokia Corporation
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  *
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  * Written by Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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8
  */
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9
 
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 #include <linux/err.h>
..
..
@@ -35,12 +32,12 @@
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 		ssize_t bytes;						\
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 		const char *str = "%20s: %08x\n";			\
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 		const int maxcol = 32;					\
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-		bytes = snprintf(p, maxcol, str, __stringify(name),	\
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+		if (len < maxcol)					\
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+			goto out;					\
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+		bytes = scnprintf(p, maxcol, str, __stringify(name),	\
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 				 iommu_read_reg(obj, MMU_##name));	\
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 		p += bytes;						\
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 		len -= bytes;						\
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-		if (len < maxcol)					\
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-			goto out;					\
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 	} while (0)
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42
 
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 static ssize_t
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@@ -162,7 +159,7 @@
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 	return 0;
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 }
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161
 
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-static int debug_read_tlb(struct seq_file *s, void *data)
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+static int tlb_show(struct seq_file *s, void *data)
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 {
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 	struct omap_iommu *obj = s->private;
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165
 
..
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@@ -213,7 +210,7 @@
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 	spin_unlock(&obj->page_table_lock);
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 }
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212
 
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-static int debug_read_pagetable(struct seq_file *s, void *data)
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+static int pagetable_show(struct seq_file *s, void *data)
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 {
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 	struct omap_iommu *obj = s->private;
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216
 
..
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@@ -231,40 +228,16 @@
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 	return 0;
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 }
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230
 
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-#define DEBUG_SEQ_FOPS_RO(name)						       \
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-	static int debug_open_##name(struct inode *inode, struct file *file)   \
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-	{								       \
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-		return single_open(file, debug_read_##name, inode->i_private); \
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-	}								       \
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-									       \
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-	static const struct file_operations debug_##name##_fops = {	       \
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-		.open		= debug_open_##name,			       \
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-		.read		= seq_read,				       \
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-		.llseek		= seq_lseek,				       \
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-		.release	= single_release,			       \
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-	}
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-
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231
 #define DEBUG_FOPS_RO(name)						\
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-	static const struct file_operations debug_##name##_fops = {	\
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+	static const struct file_operations name##_fops = {	        \
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 		.open = simple_open,					\
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 		.read = debug_read_##name,				\
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 		.llseek = generic_file_llseek,				\
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 	}
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237
 
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 DEBUG_FOPS_RO(regs);
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-DEBUG_SEQ_FOPS_RO(tlb);
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-DEBUG_SEQ_FOPS_RO(pagetable);
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-
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-#define __DEBUG_ADD_FILE(attr, mode)					\
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-	{								\
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-		struct dentry *dent;					\
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-		dent = debugfs_create_file(#attr, mode, obj->debug_dir,	\
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-					   obj, &debug_##attr##_fops);	\
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-		if (!dent)						\
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-			goto err;					\
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-	}
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-
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-#define DEBUG_ADD_FILE_RO(name) __DEBUG_ADD_FILE(name, 0400)
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+DEFINE_SHOW_ATTRIBUTE(tlb);
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+DEFINE_SHOW_ATTRIBUTE(pagetable);
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241
 
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 void omap_iommu_debugfs_add(struct omap_iommu *obj)
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 {
..
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@@ -273,23 +246,13 @@
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 	if (!iommu_debug_root)
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 		return;
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248
 
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-	obj->debug_dir = debugfs_create_dir(obj->name, iommu_debug_root);
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-	if (!obj->debug_dir)
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-		return;
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+	d = debugfs_create_dir(obj->name, iommu_debug_root);
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+	obj->debug_dir = d;
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251
 
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-	d = debugfs_create_u32("nr_tlb_entries", 0400, obj->debug_dir,
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-			       &obj->nr_tlb_entries);
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-	if (!d)
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-		return;
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-
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-	DEBUG_ADD_FILE_RO(regs);
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-	DEBUG_ADD_FILE_RO(tlb);
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-	DEBUG_ADD_FILE_RO(pagetable);
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-
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-	return;
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-
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-err:
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-	debugfs_remove_recursive(obj->debug_dir);
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+	debugfs_create_u32("nr_tlb_entries", 0400, d, &obj->nr_tlb_entries);
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+	debugfs_create_file("regs", 0400, d, obj, &regs_fops);
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+	debugfs_create_file("tlb", 0400, d, obj, &tlb_fops);
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+	debugfs_create_file("pagetable", 0400, d, obj, &pagetable_fops);
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256
 }
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257
 
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 void omap_iommu_debugfs_remove(struct omap_iommu *obj)
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@@ -303,8 +266,6 @@
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 void __init omap_iommu_debugfs_init(void)
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 {
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 	iommu_debug_root = debugfs_create_dir("omap_iommu", NULL);
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-	if (!iommu_debug_root)
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-		pr_err("can't create debugfs dir\n");
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269
 }
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270
 
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 void __exit omap_iommu_debugfs_exit(void)