From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754513Ab2IHOCI (ORCPT ); Sat, 8 Sep 2012 10:02:08 -0400 Received: from mail-we0-f174.google.com ([74.125.82.174]:45141 "EHLO mail-we0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751809Ab2IHOCG (ORCPT ); Sat, 8 Sep 2012 10:02:06 -0400 From: Peter Senna Tschudin To: Mauro Carvalho Chehab Cc: kernel-janitors@vger.kernel.org, wharms@bfs.de, Julia.Lawall@lip6.fr, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c: fix error return code Date: Sat, 8 Sep 2012 16:01:58 +0200 Message-Id: <1347112918-7738-1-git-send-email-peter.senna@gmail.com> X-Mailer: git-send-email 1.7.11.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Peter Senna Tschudin Convert a nonnegative error return code to a negative one, as returned elsewhere in the function. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // ( if@p1 (\(ret < 0\|ret != 0\)) { ... return ret; } | ret@p1 = 0 ) ... when != ret = e1 when != &ret *if(...) { ... when != ret = e2 when forall return ret; } // Signed-off-by: Peter Senna Tschudin --- walter harms , thanks for the tip. Please take a look carefully to check if I got your suggestion correctly. It was tested by compilation only. drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c | 30 ++++++----------- 1 file changed, 12 insertions(+), 18 deletions(-) diff --git a/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c b/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c index c8c94fb..b663dac 100644 --- a/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c +++ b/drivers/media/pci/cx25821/cx25821-video-upstream-ch2.c @@ -704,11 +704,9 @@ int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select, { struct sram_channel *sram_ch; u32 tmp; - int retval = 0; int err = 0; int data_frame_size = 0; int risc_buffer_size = 0; - int str_length = 0; if (dev->_is_running_ch2) { pr_info("Video Channel is still running so return!\n"); @@ -744,20 +742,16 @@ int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select, risc_buffer_size = dev->_isNTSC_ch2 ? NTSC_RISC_BUF_SIZE : PAL_RISC_BUF_SIZE; - if (dev->input_filename_ch2) { - str_length = strlen(dev->input_filename_ch2); - dev->_filename_ch2 = kmemdup(dev->input_filename_ch2, - str_length + 1, GFP_KERNEL); - - if (!dev->_filename_ch2) - goto error; - } else { - str_length = strlen(dev->_defaultname_ch2); - dev->_filename_ch2 = kmemdup(dev->_defaultname_ch2, - str_length + 1, GFP_KERNEL); + if (dev->input_filename_ch2) + dev->_filename_ch2 = kstrdup(dev->input_filename_ch2, + GFP_KERNEL); + else + dev->_filename_ch2 = kstrdup(dev->_defaultname_ch2, + GFP_KERNEL); - if (!dev->_filename_ch2) - goto error; + if (!dev->_filename_ch2) { + err = -ENOENT; + goto error; } /* Default if filename is empty string */ @@ -773,7 +767,7 @@ int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select, } } - retval = cx25821_sram_channel_setup_upstream(dev, sram_ch, + err = cx25821_sram_channel_setup_upstream(dev, sram_ch, dev->_line_size_ch2, 0); /* setup fifo + format */ @@ -783,9 +777,9 @@ int cx25821_vidupstream_init_ch2(struct cx25821_dev *dev, int channel_select, dev->upstream_databuf_size_ch2 = data_frame_size * 2; /* Allocating buffers and prepare RISC program */ - retval = cx25821_upstream_buffer_prepare_ch2(dev, sram_ch, + err = cx25821_upstream_buffer_prepare_ch2(dev, sram_ch, dev->_line_size_ch2); - if (retval < 0) { + if (err < 0) { pr_err("%s: Failed to set up Video upstream buffers!\n", dev->name); goto error;