From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:47048 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752723AbcFVWq6 (ORCPT ); Wed, 22 Jun 2016 18:46:58 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Russell King , Gregory CLEMENT , "David S. Miller" Subject: [PATCH 4.6 14/81] net: mvneta: Fix lacking spinlock initialization Date: Wed, 22 Jun 2016 15:45:37 -0700 Message-Id: <20160622223743.976764129@linuxfoundation.org> In-Reply-To: <20160622223743.240652686@linuxfoundation.org> References: <20160622223743.240652686@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Sender: stable-owner@vger.kernel.org List-ID: 4.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Gregory CLEMENT [ Upstream commit 91c45e38b9478ff507e05f10151d64cd0d1aad7b ] The spinlock used by the hwbm functions must be initialized by the network driver. This commit fixes this lack and the following erros when lockdep is enabled: INFO: trying to register non-static key. the code is fine but needs lockdep annotation. turning off the locking correctness validator. [] (unwind_backtrace) from [] (show_stack+0x10/0x14) [] (show_stack) from [] (dump_stack+0xb4/0xe0) [] (dump_stack) from [] (__lock_acquire+0x1f58/0x2060) [] (__lock_acquire) from [] (lock_acquire+0xa4/0xd0) [] (lock_acquire) from [] (_raw_spin_lock_irqsave+0x54/0x68) [] (_raw_spin_lock_irqsave) from [] (hwbm_pool_add+0x1c/0xdc) [] (hwbm_pool_add) from [] (mvneta_bm_pool_use+0x338/0x490) [] (mvneta_bm_pool_use) from [] (mvneta_probe+0x654/0x1284) [] (mvneta_probe) from [] (platform_drv_probe+0x4c/0xb0) [] (platform_drv_probe) from [] (driver_probe_device+0x214/0x2c0) [] (driver_probe_device) from [] (__driver_attach+0xc0/0xc4) [] (__driver_attach) from [] (bus_for_each_dev+0x68/0x9c) [] (bus_for_each_dev) from [] (bus_add_driver+0x1a0/0x218) [] (bus_add_driver) from [] (driver_register+0x78/0xf8) [] (driver_register) from [] (do_one_initcall+0x90/0x1dc) [] (do_one_initcall) from [] (kernel_init_freeable+0x15c/0x1fc) [] (kernel_init_freeable) from [] (kernel_init+0x8/0x114) [] (kernel_init) from [] (ret_from_fork+0x14/0x24) Fixes: baa11ebc0c76 ("net: mvneta: Use the new hwbm framework") Reported-by: Russell King Cc: Signed-off-by: Gregory CLEMENT Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/marvell/mvneta_bm.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/ethernet/marvell/mvneta_bm.c +++ b/drivers/net/ethernet/marvell/mvneta_bm.c @@ -189,6 +189,7 @@ struct mvneta_bm_pool *mvneta_bm_pool_us SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); hwbm_pool->construct = mvneta_bm_construct; hwbm_pool->priv = new_pool; + spin_lock_init(&hwbm_pool->lock); /* Create new pool */ err = mvneta_bm_pool_create(priv, new_pool);