[PATCH -next v2] bus: mvebu-mbus: Convert to DEFINE_SHOW_ATTRIBUTE

[Qinglang Miao]

Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

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

 drivers/bus/mvebu-mbus.c | 24 ++----------------------
 1 file changed, 2 insertions(+), 22 deletions(-)

diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 2519ceede..4439612b3 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -470,17 +470,7 @@ static int mvebu_sdram_debug_show(struct seq_file *seq, void *v)
 	return mbus->soc->show_cpu_target(mbus, seq, v);
 }
 
-static int mvebu_sdram_debug_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, mvebu_sdram_debug_show, inode->i_private);
-}
-
-static const struct file_operations mvebu_sdram_debug_fops = {
-	.open = mvebu_sdram_debug_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(mvebu_sdram_debug);
 
 static int mvebu_devs_debug_show(struct seq_file *seq, void *v)
 {
@@ -520,17 +510,7 @@ static int mvebu_devs_debug_show(struct seq_file *seq, void *v)
 	return 0;
 }
 
-static int mvebu_devs_debug_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, mvebu_devs_debug_show, inode->i_private);
-}
-
-static const struct file_operations mvebu_devs_debug_fops = {
-	.open = mvebu_devs_debug_open,
-	.read = seq_read,
-	.llseek = seq_lseek,
-	.release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(mvebu_devs_debug);
 
 /*
  * SoC-specific functions and definitions
-- 
2.23.0