From patchwork Tue Sep 11 09:42:18 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shubhrajyoti Datta X-Patchwork-Id: 1436571 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id EDECCDFAF3 for ; Tue, 11 Sep 2012 09:43:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932107Ab2IKJns (ORCPT ); Tue, 11 Sep 2012 05:43:48 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:46709 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758637Ab2IKJnj (ORCPT ); Tue, 11 Sep 2012 05:43:39 -0400 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id q8B9gsDF015029; Tue, 11 Sep 2012 04:42:55 -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 q8B9gsuN009231; Tue, 11 Sep 2012 15:12:54 +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; Tue, 11 Sep 2012 15:12:54 +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 q8B9gKDl010282; Tue, 11 Sep 2012 15:12:54 +0530 From: Shubhrajyoti D To: CC: , , , , , Felipe Balbi , Shubhrajyoti D Subject: [PATCHv7 23/23] i2c: omap: sanitize exit path Date: Tue, 11 Sep 2012 15:12:18 +0530 Message-ID: <1347356538-23835-24-git-send-email-shubhrajyoti@ti.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1347356538-23835-1-git-send-email-shubhrajyoti@ti.com> References: <1347356538-23835-1-git-send-email-shubhrajyoti@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From: Felipe Balbi move the goto out label one line down, so that it can be used when stat is read as zero. All other exits, can be done with a break statement. While at that, also break out as soon as we complete draining IRQ, since at that time we know we transferred everything there was to be transferred. Signed-off-by: Felipe Balbi Signed-off-by: Shubhrajyoti D --- drivers/i2c/busses/i2c-omap.c | 26 +++++++++++++------------- 1 files changed, 13 insertions(+), 13 deletions(-) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 122f517..b149e32 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -901,27 +901,26 @@ omap_i2c_isr_thread(int this_irq, void *dev_id) if (!stat) { /* my work here is done */ - spin_unlock_irqrestore(&dev->lock, flags); - return IRQ_HANDLED; + goto out; } dev_dbg(dev->dev, "IRQ (ISR = 0x%04x)\n", stat); if (count++ == 100) { dev_warn(dev->dev, "Too much work in one IRQ\n"); - goto out; + break; } if (stat & OMAP_I2C_STAT_NACK) { err |= OMAP_I2C_STAT_NACK; omap_i2c_ack_stat(dev, OMAP_I2C_STAT_NACK); - goto out; + break; } if (stat & OMAP_I2C_STAT_AL) { dev_err(dev->dev, "Arbitration lost\n"); err |= OMAP_I2C_STAT_AL; omap_i2c_ack_stat(dev, OMAP_I2C_STAT_AL); - goto out; + break; } /* @@ -934,7 +933,7 @@ omap_i2c_isr_thread(int this_irq, void *dev_id) OMAP_I2C_STAT_XRDY | OMAP_I2C_STAT_XDR | OMAP_I2C_STAT_ARDY)); - goto out; + break; } if (stat & OMAP_I2C_STAT_RDR) { @@ -949,7 +948,7 @@ omap_i2c_isr_thread(int this_irq, void *dev_id) i2c_omap_errata_i207(dev, stat); omap_i2c_ack_stat(dev, OMAP_I2C_STAT_RDR); - continue; + break; } if (stat & OMAP_I2C_STAT_RRDY) { @@ -972,10 +971,10 @@ omap_i2c_isr_thread(int this_irq, void *dev_id) ret = omap_i2c_transmit_data(dev, num_bytes, true); if (ret < 0) - goto out; + break; omap_i2c_ack_stat(dev, OMAP_I2C_STAT_XDR); - continue; + break; } if (stat & OMAP_I2C_STAT_XRDY) { @@ -987,7 +986,7 @@ omap_i2c_isr_thread(int this_irq, void *dev_id) ret = omap_i2c_transmit_data(dev, num_bytes, false); if (ret < 0) - goto out; + break; omap_i2c_ack_stat(dev, OMAP_I2C_STAT_XRDY); continue; @@ -997,19 +996,20 @@ omap_i2c_isr_thread(int this_irq, void *dev_id) dev_err(dev->dev, "Receive overrun\n"); err |= OMAP_I2C_STAT_ROVR; omap_i2c_ack_stat(dev, OMAP_I2C_STAT_ROVR); - goto out; + break; } if (stat & OMAP_I2C_STAT_XUDF) { dev_err(dev->dev, "Transmit underflow\n"); err |= OMAP_I2C_STAT_XUDF; omap_i2c_ack_stat(dev, OMAP_I2C_STAT_XUDF); - goto out; + break; } } while (stat); -out: omap_i2c_complete_cmd(dev, err); + +out: spin_unlock_irqrestore(&dev->lock, flags); return IRQ_HANDLED;