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Subject: [media] cx25821: fix error return code and clean up
Author:  Peter Senna Tschudin <[email protected]>
Date:    Mon Sep 17 04:04:56 2012 -0300

The function cx25821_sram_channel_setup_upstream_audio always return zero,
so the return value is not saved any more.
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/)
// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Peter Senna Tschudin <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 drivers/media/pci/cx25821/cx25821-audio-upstream.c |   17 ++++++++++-------
 1 files changed, 10 insertions(+), 7 deletions(-)

---

http://git.linuxtv.org/media_tree.git?a=commitdiff;h=c81d497284f6009a856b399e70f812671fdc7fcf

diff --git a/drivers/media/pci/cx25821/cx25821-audio-upstream.c 
b/drivers/media/pci/cx25821/cx25821-audio-upstream.c
index ad84613..42ad84a 100644
--- a/drivers/media/pci/cx25821/cx25821-audio-upstream.c
+++ b/drivers/media/pci/cx25821/cx25821-audio-upstream.c
@@ -700,7 +700,6 @@ fail_irq:
 int cx25821_audio_upstream_init(struct cx25821_dev *dev, int channel_select)
 {
        struct sram_channel *sram_ch;
-       int retval = 0;
        int err = 0;
        int str_length = 0;
 
@@ -735,8 +734,10 @@ int cx25821_audio_upstream_init(struct cx25821_dev *dev, 
int channel_select)
                dev->_audiofilename = kmemdup(dev->input_audiofilename,
                                              str_length + 1, GFP_KERNEL);
 
-               if (!dev->_audiofilename)
+               if (!dev->_audiofilename) {
+                       err = -ENOMEM;
                        goto error;
+               }
 
                /* Default if filename is empty string */
                if (strcmp(dev->input_audiofilename, "") == 0)
@@ -746,12 +747,14 @@ int cx25821_audio_upstream_init(struct cx25821_dev *dev, 
int channel_select)
                dev->_audiofilename = kmemdup(_defaultAudioName,
                                              str_length + 1, GFP_KERNEL);
 
-               if (!dev->_audiofilename)
+               if (!dev->_audiofilename) {
+                       err = -ENOMEM;
                        goto error;
+               }
        }
 
-       retval = cx25821_sram_channel_setup_upstream_audio(dev, sram_ch,
-                                                       _line_size, 0);
+       cx25821_sram_channel_setup_upstream_audio(dev, sram_ch,
+                                                 _line_size, 0);
 
        dev->audio_upstream_riscbuf_size =
                AUDIO_RISC_DMA_BUF_SIZE * NUM_AUDIO_PROGS +
@@ -759,9 +762,9 @@ int cx25821_audio_upstream_init(struct cx25821_dev *dev, 
int channel_select)
        dev->audio_upstream_databuf_size = AUDIO_DATA_BUF_SZ * NUM_AUDIO_PROGS;
 
        /* Allocating buffers and prepare RISC program */
-       retval = cx25821_audio_upstream_buffer_prepare(dev, sram_ch,
+       err = cx25821_audio_upstream_buffer_prepare(dev, sram_ch,
                                                        _line_size);
-       if (retval < 0) {
+       if (err < 0) {
                pr_err("%s: Failed to set up Audio upstream buffers!\n",
                        dev->name);
                goto error;

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