From patchwork Thu Mar 8 02:38:25 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Paul Walmsley X-Patchwork-Id: 145433 Return-Path: X-Original-To: incoming-imx@patchwork.ozlabs.org Delivered-To: patchwork-incoming-imx@bilbo.ozlabs.org Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:4978:20e::2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id E4EB2B6EEA for ; Thu, 8 Mar 2012 13:45:30 +1100 (EST) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1S5TJV-0003PX-Gf; Thu, 08 Mar 2012 02:42:45 +0000 Received: from utopia.booyaka.com ([72.9.107.138]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1S5TIy-0003MV-0G for linux-arm-kernel@lists.infradead.org; Thu, 08 Mar 2012 02:42:15 +0000 Received: (qmail 14270 invoked by uid 1019); 8 Mar 2012 02:42:08 -0000 MBOX-Line: From nobody Wed Mar 7 19:38:25 2012 Subject: [PATCH 03/12] ARM: OMAP2+: hwmod: consolidate finding the MPU port index and storing it To: linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org From: Paul Walmsley Date: Wed, 07 Mar 2012 19:38:25 -0700 Message-ID: <20120308023824.8205.11522.stgit@dusk> In-Reply-To: <20120308023614.8205.78768.stgit@dusk> References: <20120308023614.8205.78768.stgit@dusk> User-Agent: StGit/0.15 MIME-Version: 1.0 X-Spam-Note: CRM114 invocation failed X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: =?utf-8?q?Beno=C3=AEt?= Cousson X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org An IP block's MPU interface port only needs to be found once. The result can be cached to speed further lookups. This patch consolidates these two steps into a single function. Signed-off-by: Paul Walmsley Cc: Benoît Cousson --- arch/arm/mach-omap2/omap_hwmod.c | 39 +++++++++++++++----------------------- 1 files changed, 15 insertions(+), 24 deletions(-) diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c index 96a03d7..3c733a8 100644 --- a/arch/arm/mach-omap2/omap_hwmod.c +++ b/arch/arm/mach-omap2/omap_hwmod.c @@ -1044,37 +1044,34 @@ static int _get_addr_space_by_name(struct omap_hwmod *oh, const char *name, } /** - * _find_mpu_port_index - find hwmod OCP slave port ID intended for MPU use + * _save_mpu_port_index - find and save the index to @oh's MPU port * @oh: struct omap_hwmod * * - * Returns the array index of the OCP slave port that the MPU - * addresses the device on, or -EINVAL upon error or not found. + * Determines the array index of the OCP slave port that the MPU uses + * to address the device, and saves it into the struct omap_hwmod. + * Intended to be called during hwmod registration only. No return + * value. */ -static int __init _find_mpu_port_index(struct omap_hwmod *oh) +static void __init _save_mpu_port_index(struct omap_hwmod *oh) { - struct omap_hwmod_ocp_if *os; + struct omap_hwmod_ocp_if *os = NULL; int i = 0; - int found = 0; if (!oh) - return -EINVAL; + return; + + oh->_int_flags |= _HWMOD_NO_MPU_PORT; while (i < oh->slaves_cnt) { os = _fetch_next_ocp_if(NULL, oh->slaves, &i); if (os->user & OCP_USER_MPU) { - found = 1; + oh->_mpu_port_index = i - 1; + oh->_int_flags &= ~_HWMOD_NO_MPU_PORT; break; } } - if (found) - pr_debug("omap_hwmod: %s: MPU OCP slave port ID %d\n", - oh->name, i - 1); - else - pr_debug("omap_hwmod: %s: no MPU OCP slave port found\n", - oh->name); - - return (found) ? (i - 1) : -EINVAL; + return; } /** @@ -1112,7 +1109,7 @@ static struct omap_hwmod_addr_space * __init _find_mpu_rt_addr_space(struct omap int found = 0, i = 0; os = _find_mpu_rt_port(oh); - if (!os->addr) + if (!os || !os->addr) return NULL; do { @@ -2175,8 +2172,6 @@ static int __init _setup(struct omap_hwmod *oh, void *n) */ static int __init _register(struct omap_hwmod *oh) { - int ms_id; - if (!oh || !oh->name || !oh->class || !oh->class->name || (oh->_state != _HWMOD_STATE_UNKNOWN)) return -EINVAL; @@ -2186,11 +2181,7 @@ static int __init _register(struct omap_hwmod *oh) if (_lookup(oh->name)) return -EEXIST; - ms_id = _find_mpu_port_index(oh); - if (!IS_ERR_VALUE(ms_id)) - oh->_mpu_port_index = ms_id; - else - oh->_int_flags |= _HWMOD_NO_MPU_PORT; + _save_mpu_port_index(oh); list_add_tail(&oh->node, &omap_hwmod_list);