diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-02 16:28:20 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-02-06 13:46:41 +0100 |
| commit | be308d68785b205e483b3a0c61ba3a82da468f2c (patch) | |
| tree | 515dec991dd76fa2b314f458a5fcbb58ebb05606 /drivers/usb/dwc3/debug.h | |
| parent | 25746a3fa2dad79a6dfc42522b5bb38b4bdec844 (diff) | |
USB: dwc3: fix memory leak with using debugfs_lookup()
When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time. To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.
Note, the root dentry for the debugfs directory for the device needs to
be saved so we don't have to keep looking it up, which required a bit
more refactoring to properly create and remove it when needed.
Reported-by: Bruce Chen <bruce.chen@unisoc.com>
Reported-by: Cixi Geng <cixi.geng1@unisoc.com>
Tested-by: Cixi Geng <gengcixi@gmail.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20230202152820.2409908-1-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/debug.h')
| -rw-r--r-- | drivers/usb/dwc3/debug.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index 48b44b88dc25..8bb2c9e3b9ac 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -414,11 +414,14 @@ static inline const char *dwc3_gadget_generic_cmd_status_string(int status) #ifdef CONFIG_DEBUG_FS extern void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep); +extern void dwc3_debugfs_remove_endpoint_dir(struct dwc3_ep *dep); extern void dwc3_debugfs_init(struct dwc3 *d); extern void dwc3_debugfs_exit(struct dwc3 *d); #else static inline void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep) { } +static inline void dwc3_debugfs_remove_endpoint_dir(struct dwc3_ep *dep) +{ } static inline void dwc3_debugfs_init(struct dwc3 *d) { } static inline void dwc3_debugfs_exit(struct dwc3 *d) |