diff mbox

[53/54] sound: soc: ac97: Be sure to clamp return value

Message ID 1450795899-28693-1-git-send-email-linus.walleij@linaro.org
State Accepted
Commit 34015f5e56c71bbdcf7189430ffb63ea67656a35
Headers show

Commit Message

Linus Walleij Dec. 22, 2015, 2:51 p.m. UTC
As we want gpio_chip .get() calls to be able to return negative
error codes and propagate to drivers, we need to go over all
drivers and make sure their return values are clamped to [0,1].
We do this by using the ret = !!(val) design pattern.

Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: alsa-devel@alsa-project.org
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

---
Mark: as mentioned in 00/54: either apply this directly
or ACK it and I will take it into the GPIO tree.
---
 sound/soc/soc-ac97.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.4.3

--
To unsubscribe from this list: send the line "unsubscribe linux-gpio" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
diff mbox

Patch

diff --git a/sound/soc/soc-ac97.c b/sound/soc/soc-ac97.c
index a2012652f212..7e0acd83b0e6 100644
--- a/sound/soc/soc-ac97.c
+++ b/sound/soc/soc-ac97.c
@@ -92,7 +92,7 @@  static int snd_soc_ac97_gpio_get(struct gpio_chip *chip, unsigned offset)
 	dev_dbg(codec->dev, "get gpio %d : %d\n", offset,
 		ret < 0 ? ret : ret & (1 << offset));
 
-	return ret < 0 ? ret : ret & (1 << offset);
+	return ret < 0 ? ret : !!(ret & (1 << offset));
 }
 
 static void snd_soc_ac97_gpio_set(struct gpio_chip *chip, unsigned offset,