linux-kernel - Re: [PATCH v2 3/3] sunrpc: Fix compilation error (`make W=1`) when dprintk() is no-op

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Message-ID: <aYN35agQMKaIGZA0@smile.fi.intel.com>
Date: Wed, 4 Feb 2026 18:46:29 +0200
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Chuck Lever <chuck.lever@...cle.com>, NeilBrown <neil@...wn.name>,
	Jeff Layton <jlayton@...nel.org>, linux-nfs@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	llvm@...ts.linux.dev
Cc: Trond Myklebust <trondmy@...nel.org>, Anna Schumaker <anna@...nel.org>,
	Olga Kornievskaia <okorniev@...hat.com>,
	Dai Ngo <Dai.Ngo@...cle.com>, Tom Talpey <tom@...pey.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>
Subject: Re: [PATCH v2 3/3] sunrpc: Fix compilation error (`make W=1`) when
 dprintk() is no-op

On Wed, Feb 04, 2026 at 10:41:23AM +0100, Andy Shevchenko wrote:
> Clang compiler is not happy about set but unused variables:
> 
> .../flexfilelayout/flexfilelayoutdev.c:56:9: error: variable 'ret' set but not used [-Werror,-Wunused-but-set-variable]
> .../flexfilelayout/flexfilelayout.c:1505:6: error: variable 'err' set but not used [-Werror,-Wunused-but-set-variable]
> .../nfs4proc.c:9244:12: error: variable 'ptr' set but not used [-Werror,-Wunused-but-set-variable]
> 
> Fix these by forwarding parameters of dprintk() to no_printk().
> The positive side-effect is a format-string checker enabled even for the cases
> when dprintk() is no-op.

I'm afraid this is not end of story...
I received a dozen of minutes ago a new report and now I'm investigating.

Patches 1 & 2 though are ready to go.

-- 
With Best Regards,
Andy Shevchenko