diff mbox

[1/2] gpio: davinci: Fix a check for unbanked gpio

Message ID 1383893156-28010-2-git-send-email-prabhakar.csengg@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Lad, Prabhakar Nov. 8, 2013, 6:45 a.m. UTC
From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>

This patch fixes a check for offset in gpio_to_irq_unbanked()
and also assigns gpio_irq, gpio_unbanked of chips[0] to
appropriate values which is used in gpio_to_irq_unbanked()
function.

Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
---
 drivers/gpio/gpio-davinci.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Sekhar Nori Nov. 12, 2013, 6:18 a.m. UTC | #1
On Friday 08 November 2013 12:15 PM, Prabhakar Lad wrote:
> From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
> 
> This patch fixes a check for offset in gpio_to_irq_unbanked()
> and also assigns gpio_irq, gpio_unbanked of chips[0] to
> appropriate values which is used in gpio_to_irq_unbanked()
> function.
> 
> Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>

You should note explicitly that this patch fixes broken unbanked IRQ
support. You mostly just described what you are doing.

I will fixup while committing.

Thanks,
Sekhar

> ---
>  drivers/gpio/gpio-davinci.c |    4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
> index 8847adf..84be701 100644
> --- a/drivers/gpio/gpio-davinci.c
> +++ b/drivers/gpio/gpio-davinci.c
> @@ -327,7 +327,7 @@ static int gpio_to_irq_unbanked(struct gpio_chip *chip, unsigned offset)
>  	 * NOTE:  we assume for now that only irqs in the first gpio_chip
>  	 * can provide direct-mapped IRQs to AINTC (up to 32 GPIOs).
>  	 */
> -	if (offset < d->irq_base)
> +	if (offset < d->gpio_unbanked)
>  		return d->gpio_irq + offset;
>  	else
>  		return -ENODEV;
> @@ -419,6 +419,8 @@ static int davinci_gpio_irq_setup(struct platform_device *pdev)
>  
>  		/* pass "bank 0" GPIO IRQs to AINTC */
>  		chips[0].chip.to_irq = gpio_to_irq_unbanked;
> +		chips[0].gpio_irq = bank_irq;
> +		chips[0].gpio_unbanked = pdata->gpio_unbanked;
>  		binten = BIT(0);
>  
>  		/* AINTC handles mask/unmask; GPIO handles triggering */
>
Linus Walleij Nov. 18, 2013, 10:48 a.m. UTC | #2
On Tue, Nov 12, 2013 at 7:18 AM, Sekhar Nori <nsekhar@ti.com> wrote:
> On Friday 08 November 2013 12:15 PM, Prabhakar Lad wrote:
>> From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
>>
>> This patch fixes a check for offset in gpio_to_irq_unbanked()
>> and also assigns gpio_irq, gpio_unbanked of chips[0] to
>> appropriate values which is used in gpio_to_irq_unbanked()
>> function.
>>
>> Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
>> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
>
> You should note explicitly that this patch fixes broken unbanked IRQ
> support. You mostly just described what you are doing.
>
> I will fixup while committing.

So you're carrying this patch Sekhar?

Thanks:
Acked-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij
Sekhar Nori Nov. 20, 2013, 2:13 p.m. UTC | #3
On Monday 18 November 2013 04:18 PM, Linus Walleij wrote:
> On Tue, Nov 12, 2013 at 7:18 AM, Sekhar Nori <nsekhar@ti.com> wrote:
>> On Friday 08 November 2013 12:15 PM, Prabhakar Lad wrote:
>>> From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>
>>>
>>> This patch fixes a check for offset in gpio_to_irq_unbanked()
>>> and also assigns gpio_irq, gpio_unbanked of chips[0] to
>>> appropriate values which is used in gpio_to_irq_unbanked()
>>> function.
>>>
>>> Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
>>> Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
>>
>> You should note explicitly that this patch fixes broken unbanked IRQ
>> support. You mostly just described what you are doing.
>>
>> I will fixup while committing.
> 
> So you're carrying this patch Sekhar?

Yes, and I would have sent this for upstream already if not for I going
under the weather a bit past couple of days.

Thanks,
Sekhar
diff mbox

Patch

diff --git a/drivers/gpio/gpio-davinci.c b/drivers/gpio/gpio-davinci.c
index 8847adf..84be701 100644
--- a/drivers/gpio/gpio-davinci.c
+++ b/drivers/gpio/gpio-davinci.c
@@ -327,7 +327,7 @@  static int gpio_to_irq_unbanked(struct gpio_chip *chip, unsigned offset)
 	 * NOTE:  we assume for now that only irqs in the first gpio_chip
 	 * can provide direct-mapped IRQs to AINTC (up to 32 GPIOs).
 	 */
-	if (offset < d->irq_base)
+	if (offset < d->gpio_unbanked)
 		return d->gpio_irq + offset;
 	else
 		return -ENODEV;
@@ -419,6 +419,8 @@  static int davinci_gpio_irq_setup(struct platform_device *pdev)
 
 		/* pass "bank 0" GPIO IRQs to AINTC */
 		chips[0].chip.to_irq = gpio_to_irq_unbanked;
+		chips[0].gpio_irq = bank_irq;
+		chips[0].gpio_unbanked = pdata->gpio_unbanked;
 		binten = BIT(0);
 
 		/* AINTC handles mask/unmask; GPIO handles triggering */