From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Ripard Subject: [PATCH 1/6] net: mvneta: Fix CPU_MAP registers initialisation Date: Fri, 3 Jul 2015 16:25:46 +0200 Message-ID: <1435933551-28696-2-git-send-email-maxime.ripard@free-electrons.com> References: <1435933551-28696-1-git-send-email-maxime.ripard@free-electrons.com> Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Maxime Ripard , To: Thomas Gleixner , Gregory Clement , Jason Cooper , Andrew Lunn , Sebastian Hesselbarth , Thomas Petazzoni , "David S. Miller" Return-path: In-Reply-To: <1435933551-28696-1-git-send-email-maxime.ripard@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org The CPU_MAP register is duplicated for each CPUs at different addresses, each instance being at a different address. However, the code so far was using CONFIG_NR_CPUS to initialise the CPU_MAP registers for each registers, while the SoCs embed at most 4 CPUs. This is especially an issue with multi_v7_defconfig, where CONFIG_NR_CPUS is currently set to 16, resulting in writes to registers that are not CPU_MAP. Fixes: c5aff18204da ("net: mvneta: driver for Marvell Armada 370/XP network unit") Signed-off-by: Maxime Ripard Cc: # v3.8+ --- drivers/net/ethernet/marvell/mvneta.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index ce5f7f9cff06..b7717375ec4d 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -948,7 +948,7 @@ static void mvneta_defaults_set(struct mvneta_port *pp) /* Set CPU queue access map - all CPUs have access to all RX * queues and to all TX queues */ - for (cpu = 0; cpu < CONFIG_NR_CPUS; cpu++) + for_each_present_cpu(cpu) mvreg_write(pp, MVNETA_CPU_MAP(cpu), (MVNETA_CPU_RXQ_ACCESS_ALL_MASK | MVNETA_CPU_TXQ_ACCESS_ALL_MASK)); -- 2.4.5