diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-09 11:39:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-10 19:57:21 +0200 |
| commit | 8562d5bfc0fcdfd3aef32991e17dca585ae5ae7d (patch) | |
| tree | 4c4a78b4b99daf91f906cfd57e6e178b124105ba /drivers/usb/dwc3/debugfs.c | |
| parent | 03a674f5d758eee6ae0beb16891eb1183fc87051 (diff) | |
USB: dwc3: remove debugfs root dentry storage
There is no need to keep around the debugfs "root" directory for the
dwc3 device. Instead, look it up anytime we need to find it. This will
help when callers get out-of-order and we had the potential to have a
"stale" pointer around for the root dentry, as has happened in the past.
Tested-by: Jack Pham <jackp@codeaurora.org>
Reviewed-by: Peter Chen <peter.chen@kernel.org>
Acked-by: Felipe Balbi <balbi@kernel.org>
Link: https://lore.kernel.org/r/20210609093924.3293230-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/debugfs.c')
| -rw-r--r-- | drivers/usb/dwc3/debugfs.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 5dbbe53269d3..f2b7675c7f62 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -889,8 +889,10 @@ static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep, void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep) { struct dentry *dir; + struct dentry *root; - dir = debugfs_create_dir(dep->name, dep->dwc->root); + root = debugfs_lookup(dev_name(dep->dwc->dev), usb_debug_root); + dir = debugfs_create_dir(dep->name, root); dwc3_debugfs_create_endpoint_files(dep, dir); } @@ -909,8 +911,6 @@ void dwc3_debugfs_init(struct dwc3 *dwc) dwc->regset->base = dwc->regs - DWC3_GLOBALS_REGS_START; root = debugfs_create_dir(dev_name(dwc->dev), usb_debug_root); - dwc->root = root; - debugfs_create_regset32("regdump", 0444, root, dwc->regset); debugfs_create_file("lsp_dump", 0644, root, dwc, &dwc3_lsp_fops); @@ -929,6 +929,6 @@ void dwc3_debugfs_init(struct dwc3 *dwc) void dwc3_debugfs_exit(struct dwc3 *dwc) { - debugfs_remove_recursive(dwc->root); + debugfs_remove(debugfs_lookup(dev_name(dwc->dev), usb_debug_root)); kfree(dwc->regset); } |