From patchwork Wed Nov 10 12:45:19 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kanigeri, Hari" X-Patchwork-Id: 314002 X-Patchwork-Delegate: hiroshi.doyu@nokia.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id oAACjCOT011616 for ; Wed, 10 Nov 2010 12:45:15 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755818Ab0KJMpN (ORCPT ); Wed, 10 Nov 2010 07:45:13 -0500 Received: from comal.ext.ti.com ([198.47.26.152]:59851 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755808Ab0KJMpL (ORCPT ); Wed, 10 Nov 2010 07:45:11 -0500 Received: from dlep34.itg.ti.com ([157.170.170.115]) by comal.ext.ti.com (8.13.7/8.13.7) with ESMTP id oAACiq9M012631 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 10 Nov 2010 06:44:52 -0600 Received: from legion.dal.design.ti.com (localhost [127.0.0.1]) by dlep34.itg.ti.com (8.13.7/8.13.7) with ESMTP id oAACipiM009295; Wed, 10 Nov 2010 06:44:51 -0600 (CST) Received: from localhost (matrix.am.dhcp.ti.com [128.247.75.166]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id oAACipf15817; Wed, 10 Nov 2010 06:44:51 -0600 (CST) From: Hari Kanigeri To: Hiroshi Doyu , linux omap Cc: Tony Lindgren , Linux ARM , Hari Kanigeri Subject: [PATCH 4/6] omap:mailbox-send message in process context Date: Wed, 10 Nov 2010 06:45:19 -0600 Message-Id: <1289393121-7911-5-git-send-email-h-kanigeri2@ti.com> X-Mailer: git-send-email 1.7.0 In-Reply-To: <1289393121-7911-1-git-send-email-h-kanigeri2@ti.com> References: <1289393121-7911-1-git-send-email-h-kanigeri2@ti.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter1.kernel.org [140.211.167.41]); Wed, 10 Nov 2010 12:45:15 +0000 (UTC) diff --git a/arch/arm/plat-omap/mailbox.c b/arch/arm/plat-omap/mailbox.c index ed960c1..e353e26 100644 --- a/arch/arm/plat-omap/mailbox.c +++ b/arch/arm/plat-omap/mailbox.c @@ -92,20 +92,25 @@ int omap_mbox_msg_send(struct omap_mbox *mbox, mbox_msg_t msg) struct omap_mbox_queue *mq = mbox->txq; int ret = 0, len; - spin_lock(&mq->lock); + spin_lock_bh(&mq->lock); if (kfifo_avail(&mq->fifo) < sizeof(msg)) { ret = -ENOMEM; goto out; } + if (kfifo_is_empty(&mq->fifo) && !__mbox_poll_for_space(mbox)) { + mbox_fifo_write(mbox, msg); + goto out; + } + len = kfifo_in(&mq->fifo, (unsigned char *)&msg, sizeof(msg)); WARN_ON(len != sizeof(msg)); tasklet_schedule(&mbox->txq->tasklet); out: - spin_unlock(&mq->lock); + spin_unlock_bh(&mq->lock); return ret; } EXPORT_SYMBOL(omap_mbox_msg_send);