On 02/12/2016 at 15:59:57 +0000, David Laight wrote : > From: Alexandre Belloni > > Sent: 01 December 2016 10:27 > > Use devm_kasprintf instead of simple kasprintf to free the allocated memory > > when needed. > > s/when needed/when the device is freed/ > > > Suggested-by: Peter Rosin <p...@axentia.se> > > Signed-off-by: Alexandre Belloni <alexandre.bell...@free-electrons.com> > > --- > > drivers/usb/gadget/udc/atmel_usba_udc.c | 3 ++- > > 1 file changed, 2 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c > > b/drivers/usb/gadget/udc/atmel_usba_udc.c > > index 45bc997d0711..aec72fe8273c 100644 > > --- a/drivers/usb/gadget/udc/atmel_usba_udc.c > > +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c > > @@ -1978,7 +1978,8 @@ static struct usba_ep * atmel_udc_of_init(struct > > platform_device *pdev, > > dev_err(&pdev->dev, "of_probe: name error(%d)\n", ret); > > goto err; > > } > > - ep->ep.name = kasprintf(GFP_KERNEL, "ep%d", ep->index); > > + ep->ep.name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "ep%d", > > + ep->index); > > Acually why bother mallocing such a small string at all. > The maximum length is 12 bytes even if 'index' are unrestricted. >
IIRC, using statically allocated string is failing somewhere is the USB core but I don't remember all the details. -- Alexandre Belloni, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com
