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[209.132.180.67]) by mx.google.com with ESMTP id z3si4347247pgr.90.2019.03.07.07.52.44; Thu, 07 Mar 2019 07:52:45 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726446AbfCGPwn (ORCPT + 31 others); Thu, 7 Mar 2019 10:52:43 -0500 Received: from mout.kundenserver.de ([212.227.126.134]:36047 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726170AbfCGPwn (ORCPT ); Thu, 7 Mar 2019 10:52:43 -0500 Received: from wuerfel.lan ([109.192.41.194]) by mrelayeu.kundenserver.de (mreue009 [212.227.15.129]) with ESMTPA (Nemesis) id 1Mj8eD-1gY4Ht27Eb-00f8pI; Thu, 07 Mar 2019 16:52:32 +0100 From: Arnd Bergmann To: Christian Benvenuti , Govindarajulu Varadarajan <_govind@gmx.com>, Parvi Kaustubhi , "David S. Miller" Cc: Nick Desaulniers , Nathan Chancellor , Arnd Bergmann , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] [v2] enic: fix build warning without CONFIG_CPUMASK_OFFSTACK Date: Thu, 7 Mar 2019 16:52:24 +0100 Message-Id: <20190307155230.2923527-1-arnd@arndb.de> X-Mailer: git-send-email 2.20.0 MIME-Version: 1.0 X-Provags-ID: V03:K1:KoZi1R4fOqB4e75Y1+qFioY60GfAUcFHJFAVYc2AriyZz0/erqb TrQ2dyp6Sry6PY2weIasG/q5Mz03RsLnzCTaDF3h1v1bUnl3QZy4FoBCgwWw/fvPAxq9J3f COaRYcY8vnxERHKwujPeOGJLazgPSoQ3rJecx63RG7MBGyE+O+RwYToSOnx7/0YlVBaOCQw 3yhpqXqXTyOotWf8HnutA== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1; V03:K0:pXyhY2Zy6Q8=:lG0nQjK2TFzbwaZn7McGMJ y9NkbB1V/0BR813bnPC+ghnpAdXImbco0l4VLYfe97XNjcoN8XCIA99Rc7Xxf+o5syrId7rUm V10uqUGga40z33UdGQFzdknzqX0Bb8KTtwseuFVfkUfFf19nsuFo3FgdHg9qujnZplecyoFOv 1nlpcYVYqJg2j4N65RD503/HvI1aPKzggeay0nk4DVHspSwPCz/I1r9+rqhFB9GGwQuDBaIck jGqqAvpRlxR3sNywMn+04wpYiaNtAIYIpnXBHygN+G5TZ8a8P4+dmubWey6CwG5ya8LWgw0Og PbZfhGXpPF1DNOh/9b/tAknLNbUcA2wn5RPJcaG67Vqs4Ah5WGNjngNKJZsd0nt9RZxH696Qf jEqfIanqOQNF1lY/t3vaP96zKpmNONPkOo8NfeNAp+jLyrEW4zVRMND3fO99cTJ75KtG/dHMt AzNPAu4/Xnvn5QRFYhyhuQ4IrH40ewaT4oL2j5Jeh3ejrCvm1HAj5wgqcsafBwlIGwcmWzwGz ncTcFLpL59m6CfKSbABGX/lpWNE1Lt2p5q8IhjQz4GmIbAlaAuJkrw9yTCUaSJHxW+gX4L7gR Gj5Kbadlf8QYtEEnitNXSwEIYVoToowubhm++KLWQefrP0WNkIwc2vJkaNYPVCwN1ndBi0EAX d+aq86UmayrZuQti3LBkZlJiqB/Z1eOSst8P6u9zTyE7TfiJBmcDDUYW8MCo6qTNrwSkxzA0A F56QomdQcbczv3/YDqBDJrnYfqKlSiG9+W5kyQ== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The enic driver relies on the CONFIG_CPUMASK_OFFSTACK feature to dynamically allocate a struct member, but this is normally intended for local variables. Building with clang, I get a warning for a few locations that check the address of the cpumask_var_t: drivers/net/ethernet/cisco/enic/enic_main.c:122:22: error: address of array 'enic->msix[i].affinity_mask' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion] As far as I can tell, the code is still correct, as the truth value of the pointer is what we need in this configuration. To get rid of the warning, use cpumask_available() instead of checking the pointer directly. Fixes: 322cf7e3a4e8 ("enic: assign affinity hint to interrupts") Signed-off-by: Arnd Bergmann --- v2: use cpumask_available() instead of open-coding a copy --- drivers/net/ethernet/cisco/enic/enic_main.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) -- 2.20.0 Reviewed-by: Nathan Chancellor diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c index 9a7f70db20c7..733d9172425b 100644 --- a/drivers/net/ethernet/cisco/enic/enic_main.c +++ b/drivers/net/ethernet/cisco/enic/enic_main.c @@ -119,7 +119,7 @@ static void enic_init_affinity_hint(struct enic *enic) for (i = 0; i < enic->intr_count; i++) { if (enic_is_err_intr(enic, i) || enic_is_notify_intr(enic, i) || - (enic->msix[i].affinity_mask && + (cpumask_available(enic->msix[i].affinity_mask) && !cpumask_empty(enic->msix[i].affinity_mask))) continue; if (zalloc_cpumask_var(&enic->msix[i].affinity_mask, @@ -148,7 +148,7 @@ static void enic_set_affinity_hint(struct enic *enic) for (i = 0; i < enic->intr_count; i++) { if (enic_is_err_intr(enic, i) || enic_is_notify_intr(enic, i) || - !enic->msix[i].affinity_mask || + !cpumask_available(enic->msix[i].affinity_mask) || cpumask_empty(enic->msix[i].affinity_mask)) continue; err = irq_set_affinity_hint(enic->msix_entry[i].vector, @@ -161,7 +161,7 @@ static void enic_set_affinity_hint(struct enic *enic) for (i = 0; i < enic->wq_count; i++) { int wq_intr = enic_msix_wq_intr(enic, i); - if (enic->msix[wq_intr].affinity_mask && + if (cpumask_available(enic->msix[wq_intr].affinity_mask) && !cpumask_empty(enic->msix[wq_intr].affinity_mask)) netif_set_xps_queue(enic->netdev, enic->msix[wq_intr].affinity_mask,