[PATCH] net: rxrpc: fix clang -Wformat warning

[Joe Perches]

On Wed, 2022-07-06 at 16:56 -0700, Justin Stitt wrote:
> When building with Clang we encounter this warning:
> > net/rxrpc/rxkad.c:434:33: error: format specifies type 'unsigned short'
> > but the argument has type 'u32' (aka 'unsigned int') [-Werror,-Wformat]
> > _leave(" = %d [set %hx]", ret, y);

Does anyone still use these debugging macros in rxrpc or
is it historic cruft?

net/rxrpc/ar-internal.h-#define kenter(FMT,...) dbgprintk("==> %s("FMT")",__func__ ,##__VA_ARGS__)
net/rxrpc/ar-internal.h-#define kleave(FMT,...) dbgprintk("<== %s()"FMT"",__func__ ,##__VA_ARGS__)
net/rxrpc/ar-internal.h-#define kdebug(FMT,...) dbgprintk("    "FMT ,##__VA_ARGS__)
net/rxrpc/ar-internal.h-#define kproto(FMT,...) dbgprintk("### "FMT ,##__VA_ARGS__)
net/rxrpc/ar-internal.h-#define knet(FMT,...)   dbgprintk("@@@ "FMT ,##__VA_ARGS__)

etc...

[]

net/rxrpc/Kconfig:config AF_RXRPC_DEBUG
net/rxrpc/Kconfig-      bool "RxRPC dynamic debugging"
net/rxrpc/Kconfig-      help
net/rxrpc/Kconfig-        Say Y here to make runtime controllable debugging messages appear.
net/rxrpc/Kconfig-
net/rxrpc/Kconfig-        See Documentation/networking/rxrpc.rst

This seems to show there is debugging documentation, but it
doesn't seem to exist in this file.

> diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c
[]
> @@ -431,7 +431,7 @@ static int rxkad_secure_packet(struct rxrpc_call *call,
>  		break;
>  	}
>  
> -	_leave(" = %d [set %hx]", ret, y);
> +	_leave(" = %d [set %u]", ret, y);
>  	return ret;
>  }
>