Hi Andrzej and Julia, Could one of you please submit a patch to fix this ?
On Thursday 17 Sep 2015 13:18:04 Andrzej Pietrasiewicz wrote: > Hi Julia, > > W dniu 17.09.2015 o 10:57, Julia Lawall pisze: > > Coccinelle suggests the following patch. But the code is curious. Is the > > function expected to always return a failure value? > > Thank you for catching this. The function is not expected to always > return a failure value. Fortunately it does not matter anyway because > the return value of the drop_link() operation is silently ignored by > its caller in fs/configfs/symlink.c, functions configfs_symlink() > and configfs_unlink(). For my comments see inline. > > > thanks, > > julia > > > > On Thu, 17 Sep 2015, kbuild test robot wrote: > >> TO: Andrzej Pietrasiewicz <andrze...@samsung.com> > >> CC: kbuild-...@01.org > >> CC: Felipe Balbi <ba...@ti.com> > >> CC: Laurent Pinchart <laurent.pinch...@ideasonboard.com> > >> CC: "Greg Kroah-Hartman" <gre...@linuxfoundation.org> > >> CC: linux-...@vger.kernel.org > >> CC: linux-kernel@vger.kernel.org > >> > >> drivers/usb/gadget/function/uvc_configfs.c:866:5-8: Unneeded variable: > >> "ret". Return "- EINVAL" on line 891>> > >> Remove unneeded variable used to store return value. > >> > >> Generated by: scripts/coccinelle/misc/returnvar.cocci > >> > >> CC: Andrzej Pietrasiewicz <andrze...@samsung.com> > >> Signed-off-by: Fengguang Wu <fengguang...@intel.com> > >> --- > >> > >> Please take the patch only if it's a positive warning. Thanks! > >> > >> uvc_configfs.c | 3 +-- > >> 1 file changed, 1 insertion(+), 2 deletions(-) > >> > >> --- a/drivers/usb/gadget/function/uvc_configfs.c > >> +++ b/drivers/usb/gadget/function/uvc_configfs.c > >> @@ -863,7 +863,6 @@ static int uvcg_streaming_header_drop_li > >> struct uvcg_streaming_header *src_hdr; > >> struct uvcg_format *target_fmt = NULL; > >> struct uvcg_format_ptr *format_ptr, *tmp; > >> - int ret = -EINVAL; > >> > >> src_hdr = to_uvcg_streaming_header(src); > >> mutex_lock(su_mutex); /* for navigating configfs hierarchy */ > >> @@ -888,7 +887,7 @@ static int uvcg_streaming_header_drop_li > >> out: > >> mutex_unlock(&opts->lock); > >> mutex_unlock(su_mutex); > >> > >> - return ret; > >> + return -EINVAL; > > return 0; -- Regards, Laurent Pinchart
