linux-kernel - [PATCH v2] ASoC: rt5677: Fix initialization of rt5677_of

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Message-Id: <20180807171940.150507-1-mka@chromium.org>
Date:   Tue,  7 Aug 2018 10:19:40 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Bard Liao <bardliao@...ltek.com>,
        Oder Chiou <oder_chiou@...ltek.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Cc:     alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
        Guenter Roeck <groeck@...omium.org>,
        Nicolas Boichat <drinkcat@...omium.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Matthias Kaehlcke <mka@...omium.org>
Subject: [PATCH v2] ASoC: rt5677: Fix initialization of rt5677_of_match.data

The driver expects to find the device id in rt5677_of_match.data, however
it is currently assigned to rt5677_of_match.type. Fix this.

The problem was found with the help of clang:
  sound/soc/codecs/rt5677.c:5010:36: warning: expression which evaluates to
  zero treated as a null pointer constant of type 'const void *'
  [-Wnon-literal-null-conversion]
    { .compatible = "realtek,rt5677", RT5677 },
                                      ^~~~~~

Fixes: ddc9e69b9dc2 ("ASoC: rt5677: Hide platform data in the module sources")
Signed-off-by: Matthias Kaehlcke <mka@...omium.org>
--
Changes in v2:
- assign device id to data instead of 'type'
- updated subject and commit message
- added: 'Fixes' tag
---
 sound/soc/codecs/rt5677.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sound/soc/codecs/rt5677.c b/sound/soc/codecs/rt5677.c
index 8a0181a2db08..47feef30dadb 100644
--- a/sound/soc/codecs/rt5677.c
+++ b/sound/soc/codecs/rt5677.c
@@ -5007,7 +5007,7 @@ static const struct regmap_config rt5677_regmap = {
 };
 
 static const struct of_device_id rt5677_of_match[] = {
-	{ .compatible = "realtek,rt5677", RT5677 },
+	{ .compatible = "realtek,rt5677", .data = (const void *)RT5677 },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, rt5677_of_match);
-- 
2.18.0.597.ga71716f1ad-goog