[PATCH] crypto: cavium/nitrox convert to DEFINE_SHOW_ATTRIBUTE

[Yangtao Li]

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Yangtao Li <tiny.win...@gmail.com>
---
 drivers/crypto/cavium/nitrox/nitrox_debugfs.c | 48 ++++---------------
 1 file changed, 9 insertions(+), 39 deletions(-)

diff --git a/drivers/crypto/cavium/nitrox/nitrox_debugfs.c 
b/drivers/crypto/cavium/nitrox/nitrox_debugfs.c
index 5f3cd5fafe04..0196b992280f 100644
--- a/drivers/crypto/cavium/nitrox/nitrox_debugfs.c
+++ b/drivers/crypto/cavium/nitrox/nitrox_debugfs.c
@@ -13,18 +13,7 @@ static int firmware_show(struct seq_file *s, void *v)
        return 0;
 }
 
-static int firmware_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, firmware_show, inode->i_private);
-}
-
-static const struct file_operations firmware_fops = {
-       .owner = THIS_MODULE,
-       .open = firmware_open,
-       .read = seq_read,
-       .llseek = seq_lseek,
-       .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(firmware);
 
 static int device_show(struct seq_file *s, void *v)
 {
@@ -41,18 +30,7 @@ static int device_show(struct seq_file *s, void *v)
        return 0;
 }
 
-static int nitrox_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, device_show, inode->i_private);
-}
-
-static const struct file_operations nitrox_fops = {
-       .owner = THIS_MODULE,
-       .open = nitrox_open,
-       .read = seq_read,
-       .llseek = seq_lseek,
-       .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(device);
 
 static int stats_show(struct seq_file *s, void *v)
 {
@@ -69,18 +47,7 @@ static int stats_show(struct seq_file *s, void *v)
        return 0;
 }
 
-static int nitrox_stats_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, stats_show, inode->i_private);
-}
-
-static const struct file_operations nitrox_stats_fops = {
-       .owner = THIS_MODULE,
-       .open = nitrox_stats_open,
-       .read = seq_read,
-       .llseek = seq_lseek,
-       .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(stats);
 
 void nitrox_debugfs_exit(struct nitrox_device *ndev)
 {
@@ -97,13 +64,16 @@ int nitrox_debugfs_init(struct nitrox_device *ndev)
                return -ENOMEM;
 
        ndev->debugfs_dir = dir;
-       f = debugfs_create_file("firmware", 0400, dir, ndev, &firmware_fops);
+       f = debugfs_create_file("firmware", 0400, dir, ndev,
+                               &firmware_fops);
        if (!f)
                goto err;
-       f = debugfs_create_file("device", 0400, dir, ndev, &nitrox_fops);
+       f = debugfs_create_file("device", 0400, dir, ndev,
+                               &device_fops);
        if (!f)
                goto err;
-       f = debugfs_create_file("stats", 0400, dir, ndev, &nitrox_stats_fops);
+       f = debugfs_create_file("stats", 0400, dir, ndev,
+                               &stats_fops);
        if (!f)
                goto err;
 
-- 
2.17.0