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[78.225.226.121]) by smtp.gmail.com with ESMTPSA id 188sm1645828wmx.12.2018.03.02.11.49.45 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 02 Mar 2018 11:49:45 -0800 (PST) Received: by macbookpro.malat.net (Postfix, from userid 1000) id 7440B10C0480; Fri, 2 Mar 2018 20:49:44 +0100 (CET) From: Mathieu Malaterre To: Michael Ellerman Subject: [PATCH v2 01/21] powerpc: Remove warning on array size when empty Date: Fri, 2 Mar 2018 20:49:18 +0100 Message-Id: <20180302194918.4358-1-malat@debian.org> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180225172236.29650-2-malat@debian.org> References: <20180225172236.29650-2-malat@debian.org> MIME-Version: 1.0 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mathieu Malaterre , linux-kernel@vger.kernel.org, Andy Shevchenko , Paul Mackerras , linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" When neither CONFIG_ALTIVEC, nor CONFIG_VSX or CONFIG_PPC64 is defined, the array feature_properties is defined as an empty array, which in turn triggers the following warning (treated as error on W=1): CC arch/powerpc/kernel/prom.o arch/powerpc/kernel/prom.c: In function ‘check_cpu_feature_properties’: arch/powerpc/kernel/prom.c:298:16: error: comparison of unsigned expression < 0 is always false [-Werror=type-limits] for (i = 0; i < ARRAY_SIZE(feature_properties); ++i, ++fp) { ^ cc1: all warnings being treated as errors Suggested-by: Michael Ellerman Signed-off-by: Mathieu Malaterre --- arch/powerpc/kernel/prom.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c index 4dffef947b8a..330c65f04820 100644 --- a/arch/powerpc/kernel/prom.c +++ b/arch/powerpc/kernel/prom.c @@ -291,11 +291,11 @@ static inline void identical_pvr_fixup(unsigned long node) static void __init check_cpu_feature_properties(unsigned long node) { - unsigned long i; + int i; struct feature_property *fp = feature_properties; const __be32 *prop; - for (i = 0; i < ARRAY_SIZE(feature_properties); ++i, ++fp) { + for (i = 0; i < (int)ARRAY_SIZE(feature_properties); ++i, ++fp) { prop = of_get_flat_dt_prop(node, fp->name, NULL); if (prop && be32_to_cpup(prop) >= fp->min_value) { cur_cpu_spec->cpu_features |= fp->cpu_feature;