On Thu, Dec 19, 2013 at 08:58:02AM -0800, Greg Kroah-Hartman wrote: > On Thu, Dec 19, 2013 at 10:11:45PM +0530, Rashika Kheria wrote: > > On Thu, Dec 19, 2013 at 10:06 PM, Greg Kroah-Hartman > > <gre...@linuxfoundation.org> wrote: > > > On Thu, Dec 19, 2013 at 03:36:00PM +0530, Rashika Kheria wrote: > > >> Include appropriate header file include/linux/usb/otg.h in core/hcd.c > > >> because function usb_bus_start_enum() has its prototype declaration in > > >> include/linux/usb/otg.h. > > >> > > >> This eliminates the following warning in core/hcd.c: > > >> drivers/usb/core/hcd.c:2295:5: warning: no previous prototype for > > >> ‘usb_bus_start_enum’ [-Wmissing-prototypes] > > > > > > What is generating this warning? I don't see it here on my machines, > > > nor do I see any of the other warnings you have fixed in this series. > > > How do I duplicate them? > > > > > > thanks, > > > > > > greg k-h > > > > Hi Greg, > > > > These warning are non-default GCC warnings. These can be seen either > > by adding W=1 while running make (i.e. make W=1) or adding > > -Wmissing-prototypes in KBUILD_CFLAGS in the toplevel Makefile. > > By default, we don't care about 'W=1' warnings, as no one sees them, and > they don't matter. > > Now if you were to see these issues with 'sparse' or just a "normal" > build, then that might be worth fixing up.
Code that generates warnings with gcc -Wmissing-prototypes will also generate warnings with Sparse's (on by default) -Wdecl. (-Wdecl also warns about data, which gcc doesn't.) - Josh Triplett -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
