[PATCH -next v2] sh: mm: Convert to DEFINE_SHOW_ATTRIBUTE

[Qinglang Miao]

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Qinglang Miao <miaoqingl...@huawei.com>
---
v2: based on linux-next(20200917), and can be applied to
    mainline cleanly now.

 arch/sh/mm/asids-debugfs.c | 15 ++-------------
 arch/sh/mm/cache-debugfs.c | 15 ++-------------
 arch/sh/mm/pmb.c           | 15 ++-------------
 3 files changed, 6 insertions(+), 39 deletions(-)

diff --git a/arch/sh/mm/asids-debugfs.c b/arch/sh/mm/asids-debugfs.c
index 4c1ca197e..d16d6f5ec 100644
--- a/arch/sh/mm/asids-debugfs.c
+++ b/arch/sh/mm/asids-debugfs.c
@@ -26,7 +26,7 @@
 #include <asm/processor.h>
 #include <asm/mmu_context.h>
 
-static int asids_seq_show(struct seq_file *file, void *iter)
+static int asids_debugfs_show(struct seq_file *file, void *iter)
 {
        struct task_struct *p;
 
@@ -48,18 +48,7 @@ static int asids_seq_show(struct seq_file *file, void *iter)
        return 0;
 }
 
-static int asids_debugfs_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, asids_seq_show, inode->i_private);
-}
-
-static const struct file_operations asids_debugfs_fops = {
-       .owner          = THIS_MODULE,
-       .open           = asids_debugfs_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(asids_debugfs);
 
 static int __init asids_debugfs_init(void)
 {
diff --git a/arch/sh/mm/cache-debugfs.c b/arch/sh/mm/cache-debugfs.c
index 17d780794..b0f185169 100644
--- a/arch/sh/mm/cache-debugfs.c
+++ b/arch/sh/mm/cache-debugfs.c
@@ -22,7 +22,7 @@ enum cache_type {
        CACHE_TYPE_UNIFIED,
 };
 
-static int cache_seq_show(struct seq_file *file, void *iter)
+static int cache_debugfs_show(struct seq_file *file, void *iter)
 {
        unsigned int cache_type = (unsigned int)file->private;
        struct cache_info *cache;
@@ -94,18 +94,7 @@ static int cache_seq_show(struct seq_file *file, void *iter)
        return 0;
 }
 
-static int cache_debugfs_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, cache_seq_show, inode->i_private);
-}
-
-static const struct file_operations cache_debugfs_fops = {
-       .owner          = THIS_MODULE,
-       .open           = cache_debugfs_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(cache_debugfs);
 
 static int __init cache_debugfs_init(void)
 {
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index b20aba6e1..68eb7cc6e 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -812,7 +812,7 @@ bool __in_29bit_mode(void)
         return (__raw_readl(PMB_PASCR) & PASCR_SE) == 0;
 }
 
-static int pmb_seq_show(struct seq_file *file, void *iter)
+static int pmb_debugfs_show(struct seq_file *file, void *iter)
 {
        int i;
 
@@ -846,18 +846,7 @@ static int pmb_seq_show(struct seq_file *file, void *iter)
        return 0;
 }
 
-static int pmb_debugfs_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, pmb_seq_show, NULL);
-}
-
-static const struct file_operations pmb_debugfs_fops = {
-       .owner          = THIS_MODULE,
-       .open           = pmb_debugfs_open,
-       .read           = seq_read,
-       .llseek         = seq_lseek,
-       .release        = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(pmb_debugfs);
 
 static int __init pmb_debugfs_init(void)
 {
-- 
2.23.0