| Message ID | 20210518162035.3697860-1-gregkh@linuxfoundation.org |
|---|---|
| State | New |
| Headers | show |
| Series | USB: gadget: lpc32xx_udc: remove debugfs dentry variable | expand |
Greg Kroah-Hartman <gregkh@linuxfoundation.org> writes: > There is no need to store the dentry for a fixed filename that we have > the string for. So just have debugfs look it up when we need it to > remove the file, no need to store it anywhere locally. > > Note, this driver is broken in that debugfs will not work for more than > one instance of the device it supports. But given that this patch does > not change that, and no one has ever seemed to notice, it must not be an > issue... > > Cc: Felipe Balbi <balbi@kernel.org> > Cc: Vladimir Zapolskiy <vz@mleia.com> > Cc: linux-usb@vger.kernel.org > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Felipe Balbi <balbi@kernel.org>
On Wed, May 19, 2021 at 02:09:17PM +0300, Vladimir Zapolskiy wrote: > On 5/18/21 7:20 PM, Greg Kroah-Hartman wrote: > > There is no need to store the dentry for a fixed filename that we have > > the string for. So just have debugfs look it up when we need it to > > remove the file, no need to store it anywhere locally. > > > > Note, this driver is broken in that debugfs will not work for more than > > one instance of the device it supports. But given that this patch does > > not change that, and no one has ever seemed to notice, it must not be an > > issue... > > Yep, there is only one SoC with this device, and it has only one instance > of this UDC. Bad excuse, I know it. Not a big deal :) > > Cc: Felipe Balbi <balbi@kernel.org> > > Cc: Vladimir Zapolskiy <vz@mleia.com> > > Cc: linux-usb@vger.kernel.org > > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > Acked-by: Vladimir Zapolskiy <vz@mleia.com> Thanks for the review! greg k-h
On Wed, May 19, 2021 at 03:05:18PM +0300, Felipe Balbi wrote: > Greg Kroah-Hartman <gregkh@linuxfoundation.org> writes: > > > There is no need to store the dentry for a fixed filename that we have > > the string for. So just have debugfs look it up when we need it to > > remove the file, no need to store it anywhere locally. > > > > Note, this driver is broken in that debugfs will not work for more than > > one instance of the device it supports. But given that this patch does > > not change that, and no one has ever seemed to notice, it must not be an > > issue... > > > > Cc: Felipe Balbi <balbi@kernel.org> > > Cc: Vladimir Zapolskiy <vz@mleia.com> > > Cc: linux-usb@vger.kernel.org > > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > > Acked-by: Felipe Balbi <balbi@kernel.org> Great, thanks for the review. greg k-h
diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c index 3f1c62adce4b..a25d01c89564 100644 --- a/drivers/usb/gadget/udc/lpc32xx_udc.c +++ b/drivers/usb/gadget/udc/lpc32xx_udc.c @@ -127,7 +127,6 @@ struct lpc32xx_udc { struct usb_gadget_driver *driver; struct platform_device *pdev; struct device *dev; - struct dentry *pde; spinlock_t lock; struct i2c_client *isp1301_i2c_client; @@ -528,12 +527,12 @@ DEFINE_SHOW_ATTRIBUTE(udc); static void create_debug_file(struct lpc32xx_udc *udc) { - udc->pde = debugfs_create_file(debug_filename, 0, NULL, udc, &udc_fops); + debugfs_create_file(debug_filename, 0, NULL, udc, &udc_fops); } static void remove_debug_file(struct lpc32xx_udc *udc) { - debugfs_remove(udc->pde); + debugfs_remove(debugfs_lookup(debug_filename, NULL)); } #else
There is no need to store the dentry for a fixed filename that we have the string for. So just have debugfs look it up when we need it to remove the file, no need to store it anywhere locally. Note, this driver is broken in that debugfs will not work for more than one instance of the device it supports. But given that this patch does not change that, and no one has ever seemed to notice, it must not be an issue... Cc: Felipe Balbi <balbi@kernel.org> Cc: Vladimir Zapolskiy <vz@mleia.com> Cc: linux-usb@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/usb/gadget/udc/lpc32xx_udc.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)