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usb: ulpi: use DEFINE_SHOW_ATTRIBUTE to simplify ulpi_regs 

Use DEFINE_SHOW_ATTRIBUTE helper macro to simplify the code.
No functional change.

Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20220922142505.3248167-1-liushixin2@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Liu Shixin 2022-09-22 22:25:05 +08:00 committed by Greg Kroah-Hartman
parent 29afbe5f5a
commit 5d5fb7c75f
1 changed files with 3 additions and 17 deletions
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20
drivers/usb/common/ulpi.c
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@ -233,7 +233,7 @@ err:
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);