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USB: chipidea: remove dentry storage for debugfs file 

There is no need to store the dentry pointer for a debugfs file that we
only use to remove it when the device goes away.  debugfs can do the
lookup for us instead, saving us some trouble, and making things smaller
overall.

Cc: Peter Chen <peter.chen@kernel.org>
Link: https://lore.kernel.org/r/20210525171419.758146-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2021-05-25 19:14:19 +02:00
parent ab00a41e73
commit 8f6c7c5a11
2 changed files with 12 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/usb/chipidea/ci.h
View File

@ -195,7 +195,6 @@ struct hw_bank {
* @phy: pointer to PHY, if any
* @usb_phy: pointer to USB PHY, if any and if using the USB PHY framework
* @hcd: pointer to usb_hcd for ehci host driver
* @debugfs: root dentry for this controller in debugfs
* @id_event: indicates there is an id event, and handled at ci_otg_work
* @b_sess_valid_event: indicates there is a vbus event, and handled
* at ci_otg_work
@ -249,7 +248,6 @@ struct ci_hdrc {
/* old usb_phy interface */
struct usb_phy *usb_phy;
struct usb_hcd *hcd;
struct dentry *debugfs;
bool id_event;
bool b_sess_valid_event;
bool imx28_write_fix;

30
drivers/usb/chipidea/debug.c
View File

@ -342,26 +342,20 @@ DEFINE_SHOW_ATTRIBUTE(ci_registers);
*/
void dbg_create_files(struct ci_hdrc *ci)
{
ci->debugfs = debugfs_create_dir(dev_name(ci->dev), usb_debug_root);
struct dentry *dir;
debugfs_create_file("device", S_IRUGO, ci->debugfs, ci,
&ci_device_fops);
debugfs_create_file("port_test", S_IRUGO | S_IWUSR, ci->debugfs, ci,
&ci_port_test_fops);
debugfs_create_file("qheads", S_IRUGO, ci->debugfs, ci,
&ci_qheads_fops);
debugfs_create_file("requests", S_IRUGO, ci->debugfs, ci,
&ci_requests_fops);
dir = debugfs_create_dir(dev_name(ci->dev), usb_debug_root);
if (ci_otg_is_fsm_mode(ci)) {
debugfs_create_file("otg", S_IRUGO, ci->debugfs, ci,
&ci_otg_fops);
}
debugfs_create_file("device", S_IRUGO, dir, ci, &ci_device_fops);
debugfs_create_file("port_test", S_IRUGO | S_IWUSR, dir, ci, &ci_port_test_fops);
debugfs_create_file("qheads", S_IRUGO, dir, ci, &ci_qheads_fops);
debugfs_create_file("requests", S_IRUGO, dir, ci, &ci_requests_fops);
debugfs_create_file("role", S_IRUGO | S_IWUSR, ci->debugfs, ci,
&ci_role_fops);
debugfs_create_file("registers", S_IRUGO, ci->debugfs, ci,
&ci_registers_fops);
if (ci_otg_is_fsm_mode(ci))
debugfs_create_file("otg", S_IRUGO, dir, ci, &ci_otg_fops);
debugfs_create_file("role", S_IRUGO | S_IWUSR, dir, ci, &ci_role_fops);
debugfs_create_file("registers", S_IRUGO, dir, ci, &ci_registers_fops);
}
/**
@ -370,5 +364,5 @@ void dbg_create_files(struct ci_hdrc *ci)
*/
void dbg_remove_files(struct ci_hdrc *ci)
{
debugfs_remove_recursive(ci->debugfs);
debugfs_remove(debugfs_lookup(dev_name(ci->dev), usb_debug_root));
}