[PATCH 3/3] ASoC: wm0010: fix error path

From: Sudip Mukherjee
Date: Fri Sep 18 2015 - 06:32:43 EST


Fix the error path so that we can free the allocated memory on the error
path instead of releasing them individually on each error.

Signed-off-by: Sudip Mukherjee <sudip@xxxxxxxxxxxxxxx>
---
sound/soc/codecs/wm0010.c | 22 ++++++++++------------
1 file changed, 10 insertions(+), 12 deletions(-)

diff --git a/sound/soc/codecs/wm0010.c b/sound/soc/codecs/wm0010.c
index 4947be5..3ced902 100644
--- a/sound/soc/codecs/wm0010.c
+++ b/sound/soc/codecs/wm0010.c
@@ -663,10 +663,8 @@ static int wm0010_boot(struct snd_soc_codec *codec)
}

img_swap = kzalloc(len, GFP_KERNEL | GFP_DMA);
- if (!img_swap) {
- kfree(out);
- goto abort;
- }
+ if (!img_swap)
+ goto abort_out;

/* We need to re-order for 0010 */
byte_swap_64((u64 *)&pll_rec, img_swap, len);
@@ -681,20 +679,16 @@ static int wm0010_boot(struct snd_soc_codec *codec)
spi_message_add_tail(&t, &m);

ret = spi_sync(spi, &m);
- if (ret != 0) {
+ if (ret) {
dev_err(codec->dev, "First PLL write failed: %d\n", ret);
- kfree(img_swap);
- kfree(out);
- goto abort;
+ goto abort_swap;
}

/* Use a second send of the message to get the return status */
ret = spi_sync(spi, &m);
- if (ret != 0) {
+ if (ret) {
dev_err(codec->dev, "Second PLL write failed: %d\n", ret);
- kfree(img_swap);
- kfree(out);
- goto abort;
+ goto abort_swap;
}

p = (u32 *)out;
@@ -727,6 +721,10 @@ static int wm0010_boot(struct snd_soc_codec *codec)

return 0;

+abort_swap:
+ kfree(img_swap);
+abort_out:
+ kfree(out);
abort:
/* Put the chip back into reset */
wm0010_halt(codec);
--
1.9.1

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