diff mbox series

usb: ulpi: use DEFINE_SHOW_ATTRIBUTE to simplify ulpi_regs

Message ID 20220922142505.3248167-1-liushixin2@huawei.com
State New
Headers show
Series usb: ulpi: use DEFINE_SHOW_ATTRIBUTE to simplify ulpi_regs | expand

Commit Message

Liu Shixin Sept. 22, 2022, 2:25 p.m. UTC 
Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
No functional change.

Signed-off-by: Liu Shixin <liushixin2@huawei.com>
---
 drivers/usb/common/ulpi.c | 20 +++-----------------
 1 file changed, 3 insertions(+), 17 deletions(-)
diff mbox series

Patch

diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c
index 0a4f441aff8f..d7c8461976ce 100644
--- a/drivers/usb/common/ulpi.c
+++ b/drivers/usb/common/ulpi.c
@@ -233,7 +233,7 @@  static int ulpi_read_id(struct ulpi *ulpi)
 	return 0;
 }
 
-static int ulpi_regs_read(struct seq_file *seq, void *data)
+static int ulpi_regs_show(struct seq_file *seq, void *data)
 {
 	struct ulpi *ulpi = seq->private;
 
@@ -269,21 +269,7 @@  static int ulpi_regs_read(struct seq_file *seq, void *data)
 
 	return 0;
 }
-
-static int ulpi_regs_open(struct inode *inode, struct file *f)
-{
-	struct ulpi *ulpi = inode->i_private;
-
-	return single_open(f, ulpi_regs_read, ulpi);
-}
-
-static const struct file_operations ulpi_regs_ops = {
-	.owner = THIS_MODULE,
-	.open = ulpi_regs_open,
-	.release = single_release,
-	.read = seq_read,
-	.llseek = seq_lseek
-};
+DEFINE_SHOW_ATTRIBUTE(ulpi_regs);
 
 #define ULPI_ROOT debugfs_lookup(KBUILD_MODNAME, NULL)
 
@@ -316,7 +302,7 @@  static int ulpi_register(struct device *dev, struct ulpi *ulpi)
 	}
 
 	root = debugfs_create_dir(dev_name(dev), ULPI_ROOT);
-	debugfs_create_file("regs", 0444, root, ulpi, &ulpi_regs_ops);
+	debugfs_create_file("regs", 0444, root, ulpi, &ulpi_regs_fops);
 
 	dev_dbg(&ulpi->dev, "registered ULPI PHY: vendor %04x, product %04x\n",
 		ulpi->id.vendor, ulpi->id.product);