[PATCH 50/54] mfd: ucb1x00-core: Be sure to clamp return value

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

 



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: Lee Jones <lee.jones@xxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
Lee: as mentioned in 00/54: either apply this directly
or ACK it and I will take it into the GPIO tree.
---
 drivers/mfd/ucb1x00-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/ucb1x00-core.c b/drivers/mfd/ucb1x00-core.c
index a6ec7cc0fac6..bcafe1ecd71c 100644
--- a/drivers/mfd/ucb1x00-core.c
+++ b/drivers/mfd/ucb1x00-core.c
@@ -133,7 +133,7 @@ static int ucb1x00_gpio_get(struct gpio_chip *chip, unsigned offset)
 	val = ucb1x00_reg_read(ucb, UCB_IO_DATA);
 	ucb1x00_disable(ucb);
 
-	return val & (1 << offset);
+	return !!(val & (1 << offset));
 }
 
 static int ucb1x00_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
-- 
2.4.3

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



[Index of Archives]     [Linux SPI]     [Linux Kernel]     [Linux ARM (vger)]     [Linux ARM MSM]     [Linux Omap]     [Linux Arm]     [Linux Tegra]     [Fedora ARM]     [Linux for Samsung SOC]     [eCos]     [Linux Fastboot]     [Gcc Help]     [Git]     [DCCP]     [IETF Announce]     [Security]     [Linux MIPS]     [Yosemite Campsites]

  Powered by Linux