Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933454AbaFIIzV (ORCPT ); Mon, 9 Jun 2014 04:55:21 -0400 Received: from ip4-83-240-18-248.cust.nbox.cz ([83.240.18.248]:58583 "EHLO ip4-83-240-18-248.cust.nbox.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932231AbaFIIv1 (ORCPT ); Mon, 9 Jun 2014 04:51:27 -0400 From: Jiri Slaby To: stable@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Arnd Bergmann , Krzysztof Kozlowski , Thomas Gleixner , Jiri Slaby Subject: [PATCH 3.12 113/146] genirq: Provide irq_force_affinity fallback for non-SMP Date: Mon, 9 Jun 2014 10:50:48 +0200 Message-Id: X-Mailer: git-send-email 1.9.3 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Arnd Bergmann 3.12-stable review patch. If anyone has any objections, please let me know. =============== commit 4c88d7f9b0d5fb0588c3386be62115cc2eaa8f9f upstream. Patch 01f8fa4f01d "genirq: Allow forcing cpu affinity of interrupts" added an irq_force_affinity() function, and 30ccf03b4a6 "clocksource: Exynos_mct: Use irq_force_affinity() in cpu bringup" subsequently uses it. However, the driver can be used with CONFIG_SMP disabled, but the function declaration is only available for CONFIG_SMP, leading to this build error: drivers/clocksource/exynos_mct.c:431:3: error: implicit declaration of function 'irq_force_affinity' [-Werror=implicit-function-declaration] irq_force_affinity(mct_irqs[MCT_L0_IRQ + cpu], cpumask_of(cpu)); This patch introduces a dummy helper function for the non-SMP case that always returns success, to get rid of the build error. Since the patches causing the problem are marked for stable backports, this one should be as well. Signed-off-by: Arnd Bergmann Cc: Krzysztof Kozlowski Acked-by: Kukjin Kim Link: http://lkml.kernel.org/r/5619084.0zmrrIUZLV@wuerfel Signed-off-by: Thomas Gleixner Signed-off-by: Jiri Slaby --- include/linux/interrupt.h | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index e7777c940972..623ab2d787d9 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -267,6 +267,11 @@ static inline int irq_set_affinity(unsigned int irq, const struct cpumask *m) return -EINVAL; } +static inline int irq_force_affinity(unsigned int irq, const struct cpumask *cpumask) +{ + return 0; +} + static inline int irq_can_set_affinity(unsigned int irq) { return 0; -- 1.9.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/