[PATCH -next v2] crypto: cavium/zip - 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.

 drivers/crypto/cavium/zip/zip_main.c | 44 ++++------------------------
 1 file changed, 6 insertions(+), 38 deletions(-)

diff --git a/drivers/crypto/cavium/zip/zip_main.c 
b/drivers/crypto/cavium/zip/zip_main.c
index 194624b48..d35216e2f 100644
--- a/drivers/crypto/cavium/zip/zip_main.c
+++ b/drivers/crypto/cavium/zip/zip_main.c
@@ -460,7 +460,7 @@ static void zip_unregister_compression_device(void)
 #include <linux/debugfs.h>
 
 /* Displays ZIP device statistics */
-static int zip_show_stats(struct seq_file *s, void *unused)
+static int zip_stats_show(struct seq_file *s, void *unused)
 {
        u64 val = 0ull;
        u64 avg_chunk = 0ull, avg_cr = 0ull;
@@ -523,7 +523,7 @@ static int zip_show_stats(struct seq_file *s, void *unused)
 }
 
 /* Clears stats data */
-static int zip_clear_stats(struct seq_file *s, void *unused)
+static int zip_clear_show(struct seq_file *s, void *unused)
 {
        int index = 0;
 
@@ -558,7 +558,7 @@ static struct zip_registers zipregs[64] = {
 };
 
 /* Prints registers' contents */
-static int zip_print_regs(struct seq_file *s, void *unused)
+static int zip_regs_show(struct seq_file *s, void *unused)
 {
        u64 val = 0;
        int i = 0, index = 0;
@@ -584,41 +584,9 @@ static int zip_print_regs(struct seq_file *s, void *unused)
        return 0;
 }
 
-static int zip_stats_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, zip_show_stats, NULL);
-}
-
-static const struct file_operations zip_stats_fops = {
-       .owner = THIS_MODULE,
-       .open  = zip_stats_open,
-       .read  = seq_read,
-       .release = single_release,
-};
-
-static int zip_clear_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, zip_clear_stats, NULL);
-}
-
-static const struct file_operations zip_clear_fops = {
-       .owner = THIS_MODULE,
-       .open  = zip_clear_open,
-       .read  = seq_read,
-       .release = single_release,
-};
-
-static int zip_regs_open(struct inode *inode, struct file *file)
-{
-       return single_open(file, zip_print_regs, NULL);
-}
-
-static const struct file_operations zip_regs_fops = {
-       .owner = THIS_MODULE,
-       .open  = zip_regs_open,
-       .read  = seq_read,
-       .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(zip_stats);
+DEFINE_SHOW_ATTRIBUTE(zip_clear);
+DEFINE_SHOW_ATTRIBUTE(zip_regs);
 
 /* Root directory for thunderx_zip debugfs entry */
 static struct dentry *zip_debugfs_root;
-- 
2.23.0