From patchwork Thu Aug 16 14:03:33 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shubhrajyoti Datta X-Patchwork-Id: 1332651 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id CEFA140210 for ; Thu, 16 Aug 2012 14:12:19 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1T20k0-0007Oi-AH; Thu, 16 Aug 2012 14:08:04 +0000 Received: from arroyo.ext.ti.com ([192.94.94.40]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1T20gm-0005ri-Fz for linux-arm-kernel@lists.infradead.org; Thu, 16 Aug 2012 14:04:45 +0000 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id q7GE49SP014005; Thu, 16 Aug 2012 09:04:10 -0500 Received: from DBDE70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id q7GE47iv025884; Thu, 16 Aug 2012 19:34:08 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by dbde70.ent.ti.com (172.24.170.148) with Microsoft SMTP Server id 14.1.323.3; Thu, 16 Aug 2012 19:34:06 +0530 Received: from ula0393217.india.ti.com (smtpvbd.itg.ti.com [172.24.170.250]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with ESMTP id q7GE44Kf027608; Thu, 16 Aug 2012 19:34:06 +0530 From: Shubhrajyoti D To: Subject: [PATCHv7 02/24] i2c: omap: simplify num_bytes handling Date: Thu, 16 Aug 2012 19:33:33 +0530 Message-ID: <1345125835-15524-3-git-send-email-shubhrajyoti@ti.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1345125835-15524-1-git-send-email-shubhrajyoti@ti.com> References: <1345125835-15524-1-git-send-email-shubhrajyoti@ti.com> MIME-Version: 1.0 X-Spam-Note: CRM114 invocation failed X-Spam-Score: -6.9 (------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-6.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [192.94.94.40 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: tony@atomide.com, w.sang@pengutronix.de, Felipe Balbi , linux-i2c@vger.kernel.org, ben-linux@fluff.org, Shubhrajyoti D , linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Felipe Balbi trivial patch, no functional changes If the fifo is disabled or fifo_size is 0 the num_bytes is set to 1. Else it is set to fifo_size or in case of a draining interrupt the remaining bytes in the buff stat. So the zero check is redundant and can be safely optimised. Signed-off-by: Felipe Balbi Reviewed-by : Santosh Shilimkar Signed-off-by: Shubhrajyoti D --- drivers/i2c/busses/i2c-omap.c | 6 ++---- 1 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 6449383..9b003a3 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -812,8 +812,7 @@ complete: OMAP_I2C_BUFSTAT_REG) >> 8) & 0x3F; } - while (num_bytes) { - num_bytes--; + while (num_bytes--) { w = omap_i2c_read_reg(dev, OMAP_I2C_DATA_REG); if (dev->buf_len) { *dev->buf++ = w; @@ -855,8 +854,7 @@ complete: OMAP_I2C_BUFSTAT_REG) & 0x3F; } - while (num_bytes) { - num_bytes--; + while (num_bytes--) { w = 0; if (dev->buf_len) { w = *dev->buf++;