Re: [PATCH] ASoC: meson: add helpers for clk_disable_unprepare

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 13/02/2024 11:11, Arnd Bergmann wrote:
From: Arnd Bergmann <arnd@xxxxxxxx>

Casting between incompatible function types causes a warning with clang-16
because it breaks control flow integrity (KCFI) rules:

sound/soc/meson/aiu.c:243:12: error: cast from 'void (*)(struct clk *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
   243 |                                        (void(*)(void *))clk_disable_unprepare,
       |                                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:406:34: note: expanded from macro 'devm_add_action_or_reset'
   406 |         __devm_add_action_or_reset(dev, action, data, #action)
       |                                         ^~~~~~
sound/soc/meson/t9015.c:274:4: error: cast from 'void (*)(struct clk *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
   274 |                         (void(*)(void *))clk_disable_unprepare,
       |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/device.h:406:34: note: expanded from macro 'devm_add_action_or_reset'
   406 |         __devm_add_action_or_reset(dev, action, data, #action)
       |                                         ^~~~~~

These two meson drivers cast clk_disable_unprepare() into a different type
in order to have it automatically called from the driver relase. Add
trivial helpers to do the same using correct types.

Fixes: 33901f5b9b16 ("ASoC: meson: add t9015 internal DAC driver")
Fixes: 6ae9ca9ce986 ("ASoC: meson: aiu: add i2s and spdif support")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
  sound/soc/meson/aiu.c   | 9 ++++++---
  sound/soc/meson/t9015.c | 9 ++++++---
  2 files changed, 12 insertions(+), 6 deletions(-)

diff --git a/sound/soc/meson/aiu.c b/sound/soc/meson/aiu.c
index 7109b81cc3d0..211f360df284 100644
--- a/sound/soc/meson/aiu.c
+++ b/sound/soc/meson/aiu.c
@@ -209,6 +209,11 @@ static const char * const aiu_spdif_ids[] = {
  	[MCLK]	= "spdif_mclk_sel"
  };
+static void aiu_clk_disable(void *clk)
+{
+	clk_disable_unprepare(clk);
+}
+
  static int aiu_clk_get(struct device *dev)
  {
  	struct aiu *aiu = dev_get_drvdata(dev);
@@ -239,9 +244,7 @@ static int aiu_clk_get(struct device *dev)
  		return ret;
  	}
- ret = devm_add_action_or_reset(dev,
-				       (void(*)(void *))clk_disable_unprepare,
-				       aiu->pclk);
+	ret = devm_add_action_or_reset(dev, aiu_clk_disable, aiu->pclk);
  	if (ret)
  		dev_err(dev, "failed to add reset action on pclk");
diff --git a/sound/soc/meson/t9015.c b/sound/soc/meson/t9015.c
index 9c6b4dac6893..e0f9a603a5e9 100644
--- a/sound/soc/meson/t9015.c
+++ b/sound/soc/meson/t9015.c
@@ -243,6 +243,11 @@ static const struct regmap_config t9015_regmap_config = {
  	.max_register		= POWER_CFG,
  };
+static void t9015_clk_disable(void *clk)
+{
+	clk_disable_unprepare(clk);
+}
+
  static int t9015_probe(struct platform_device *pdev)
  {
  	struct device *dev = &pdev->dev;
@@ -270,9 +275,7 @@ static int t9015_probe(struct platform_device *pdev)
  		return ret;
  	}
- ret = devm_add_action_or_reset(dev,
-			(void(*)(void *))clk_disable_unprepare,
-			priv->pclk);
+	ret = devm_add_action_or_reset(dev, t9015_clk_disable, priv->pclk);
  	if (ret)
  		return ret;

Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>



[Index of Archives]     [ALSA User]     [Linux Audio Users]     [Pulse Audio]     [Kernel Archive]     [Asterisk PBX]     [Photo Sharing]     [Linux Sound]     [Video 4 Linux]     [Gimp]     [Yosemite News]

  Powered by Linux