* [PATCH 46/54] mfd: dm355evm_mps: Be sure to clamp return value
@ 2015-12-22 14:45 Linus Walleij
2016-01-11 7:47 ` Lee Jones
0 siblings, 1 reply; 6+ messages in thread
From: Linus Walleij @ 2015-12-22 14:45 UTC (permalink / raw)
To: linux-gpio, Guan Xuetao; +Cc: Linus Walleij, Lee Jones
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@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
Lee: as mentioned in 00/54: either apply this directly
or ACK it and I will take it into the GPIO tree.
---
drivers/mfd/dm355evm_msp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c
index bc90efe01b59..ec4438ed2faf 100644
--- a/drivers/mfd/dm355evm_msp.c
+++ b/drivers/mfd/dm355evm_msp.c
@@ -147,7 +147,7 @@ static int msp_gpio_get(struct gpio_chip *chip, unsigned offset)
return status;
if (reg == DM355EVM_MSP_LED)
msp_led_cache = status;
- return status & MSP_GPIO_MASK(offset);
+ return !!(status & MSP_GPIO_MASK(offset));
}
static int msp_gpio_out(struct gpio_chip *chip, unsigned offset, int value)
--
2.4.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 46/54] mfd: dm355evm_mps: Be sure to clamp return value
@ 2015-12-22 14:47 Linus Walleij
2016-01-11 7:47 ` Lee Jones
0 siblings, 1 reply; 6+ messages in thread
From: Linus Walleij @ 2015-12-22 14:47 UTC (permalink / raw)
To: linux-gpio, Lee Jones; +Cc: Linus Walleij
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@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
Lee: as mentioned in 00/54: either apply this directly
or ACK it and I will take it into the GPIO tree.
---
drivers/mfd/dm355evm_msp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c
index bc90efe01b59..ec4438ed2faf 100644
--- a/drivers/mfd/dm355evm_msp.c
+++ b/drivers/mfd/dm355evm_msp.c
@@ -147,7 +147,7 @@ static int msp_gpio_get(struct gpio_chip *chip, unsigned offset)
return status;
if (reg == DM355EVM_MSP_LED)
msp_led_cache = status;
- return status & MSP_GPIO_MASK(offset);
+ return !!(status & MSP_GPIO_MASK(offset));
}
static int msp_gpio_out(struct gpio_chip *chip, unsigned offset, int value)
--
2.4.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 46/54] mfd: dm355evm_mps: Be sure to clamp return value
@ 2015-12-22 14:47 Linus Walleij
2016-01-11 7:47 ` Lee Jones
0 siblings, 1 reply; 6+ messages in thread
From: Linus Walleij @ 2015-12-22 14:47 UTC (permalink / raw)
To: linux-gpio, Lee Jones; +Cc: Linus Walleij
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@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
Lee: as mentioned in 00/54: either apply this directly
or ACK it and I will take it into the GPIO tree.
---
drivers/mfd/dm355evm_msp.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c
index bc90efe01b59..ec4438ed2faf 100644
--- a/drivers/mfd/dm355evm_msp.c
+++ b/drivers/mfd/dm355evm_msp.c
@@ -147,7 +147,7 @@ static int msp_gpio_get(struct gpio_chip *chip, unsigned offset)
return status;
if (reg == DM355EVM_MSP_LED)
msp_led_cache = status;
- return status & MSP_GPIO_MASK(offset);
+ return !!(status & MSP_GPIO_MASK(offset));
}
static int msp_gpio_out(struct gpio_chip *chip, unsigned offset, int value)
--
2.4.3
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH 46/54] mfd: dm355evm_mps: Be sure to clamp return value
2015-12-22 14:47 Linus Walleij
@ 2016-01-11 7:47 ` Lee Jones
0 siblings, 0 replies; 6+ messages in thread
From: Lee Jones @ 2016-01-11 7:47 UTC (permalink / raw)
To: Linus Walleij; +Cc: linux-gpio
On Tue, 22 Dec 2015, Linus Walleij wrote:
> 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@linaro.org>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> Lee: as mentioned in 00/54: either apply this directly
> or ACK it and I will take it into the GPIO tree.
> ---
> drivers/mfd/dm355evm_msp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Applied, thanks.
> diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c
> index bc90efe01b59..ec4438ed2faf 100644
> --- a/drivers/mfd/dm355evm_msp.c
> +++ b/drivers/mfd/dm355evm_msp.c
> @@ -147,7 +147,7 @@ static int msp_gpio_get(struct gpio_chip *chip, unsigned offset)
> return status;
> if (reg == DM355EVM_MSP_LED)
> msp_led_cache = status;
> - return status & MSP_GPIO_MASK(offset);
> + return !!(status & MSP_GPIO_MASK(offset));
> }
>
> static int msp_gpio_out(struct gpio_chip *chip, unsigned offset, int value)
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
--
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
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 46/54] mfd: dm355evm_mps: Be sure to clamp return value
2015-12-22 14:47 [PATCH 46/54] mfd: dm355evm_mps: Be sure to clamp return value Linus Walleij
@ 2016-01-11 7:47 ` Lee Jones
0 siblings, 0 replies; 6+ messages in thread
From: Lee Jones @ 2016-01-11 7:47 UTC (permalink / raw)
To: Linus Walleij; +Cc: linux-gpio
On Tue, 22 Dec 2015, Linus Walleij wrote:
> 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@linaro.org>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> Lee: as mentioned in 00/54: either apply this directly
> or ACK it and I will take it into the GPIO tree.
> ---
> drivers/mfd/dm355evm_msp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Applied, thanks.
> diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c
> index bc90efe01b59..ec4438ed2faf 100644
> --- a/drivers/mfd/dm355evm_msp.c
> +++ b/drivers/mfd/dm355evm_msp.c
> @@ -147,7 +147,7 @@ static int msp_gpio_get(struct gpio_chip *chip, unsigned offset)
> return status;
> if (reg == DM355EVM_MSP_LED)
> msp_led_cache = status;
> - return status & MSP_GPIO_MASK(offset);
> + return !!(status & MSP_GPIO_MASK(offset));
> }
>
> static int msp_gpio_out(struct gpio_chip *chip, unsigned offset, int value)
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
--
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
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 46/54] mfd: dm355evm_mps: Be sure to clamp return value
2015-12-22 14:45 Linus Walleij
@ 2016-01-11 7:47 ` Lee Jones
0 siblings, 0 replies; 6+ messages in thread
From: Lee Jones @ 2016-01-11 7:47 UTC (permalink / raw)
To: Linus Walleij; +Cc: linux-gpio, Guan Xuetao
On Tue, 22 Dec 2015, Linus Walleij wrote:
> 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@linaro.org>
> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
> ---
> Lee: as mentioned in 00/54: either apply this directly
> or ACK it and I will take it into the GPIO tree.
> ---
> drivers/mfd/dm355evm_msp.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Applied, thanks.
> diff --git a/drivers/mfd/dm355evm_msp.c b/drivers/mfd/dm355evm_msp.c
> index bc90efe01b59..ec4438ed2faf 100644
> --- a/drivers/mfd/dm355evm_msp.c
> +++ b/drivers/mfd/dm355evm_msp.c
> @@ -147,7 +147,7 @@ static int msp_gpio_get(struct gpio_chip *chip, unsigned offset)
> return status;
> if (reg == DM355EVM_MSP_LED)
> msp_led_cache = status;
> - return status & MSP_GPIO_MASK(offset);
> + return !!(status & MSP_GPIO_MASK(offset));
> }
>
> static int msp_gpio_out(struct gpio_chip *chip, unsigned offset, int value)
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
--
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
^ permalink raw reply [flat|nested] 6+ messages in thread
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