target/linux/bcm27xx/patches-5.4/950-0450-ASoC-pcm512x-Fix-unbalanced-regulator-enable-call-in.patch

   1 From 9a536b0cb8f83bd979fe274ef0197ece12a3ed09 Mon Sep 17 00:00:00 2001
   2 From: Matthias Reichl <hias@horus.com>
   3 Date: Thu, 20 Feb 2020 21:29:56 +0100
   4 Subject: [PATCH] ASoC: pcm512x: Fix unbalanced regulator enable call
   5  in probe error path
   6
   7 commit ac0a68997935c4acb92eaae5ad8982e0bb432d56 upstream.
   8
   9 When we get a clock error during probe we have to call
  10 regulator_bulk_disable before bailing out, otherwise we trigger
  11 a warning in regulator_put.
  12
  13 Fix this by using "goto err" like in the error cases above.
  14
  15 Fixes: 5a3af1293194d ("ASoC: pcm512x: Add PCM512x driver")
  16 Signed-off-by: Matthias Reichl <hias@horus.com>
  17 Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
  18 Link: https://lore.kernel.org/r/20200220202956.29233-1-hias@horus.com
  19 Signed-off-by: Mark Brown <broonie@kernel.org>
  20 ---
  21  sound/soc/codecs/pcm512x.c | 8 +++++---
  22  1 file changed, 5 insertions(+), 3 deletions(-)
  23
  24 --- a/sound/soc/codecs/pcm512x.c
  25 +++ b/sound/soc/codecs/pcm512x.c
  26 @@ -1564,13 +1564,15 @@ int pcm512x_probe(struct device *dev, st
  27         }
  28
  29         pcm512x->sclk = devm_clk_get(dev, NULL);
  30 -       if (PTR_ERR(pcm512x->sclk) == -EPROBE_DEFER)
  31 -               return -EPROBE_DEFER;
  32 +       if (PTR_ERR(pcm512x->sclk) == -EPROBE_DEFER) {
  33 +               ret = -EPROBE_DEFER;
  34 +               goto err;
  35 +       }
  36         if (!IS_ERR(pcm512x->sclk)) {
  37                 ret = clk_prepare_enable(pcm512x->sclk);
  38                 if (ret != 0) {
  39                         dev_err(dev, "Failed to enable SCLK: %d\n", ret);
  40 -                       return ret;
  41 +                       goto err;
  42                 }
  43         }
  44