Re: [PATCH] pinctrl: at91-pio4: use %pr format string for resource

From: Ludovic Desroches
Date: Tue Nov 17 2015 - 08:33:45 EST

Hi Arnd,

On Thu, Nov 12, 2015 at 03:15:38PM +0100, Arnd Bergmann wrote:
> resource_size_t may be defined as 32 or 64 bit depending on configuration,
> so it cannot be printed using the normal format strings, as gcc correctly
> warns:
> pinctrl-at91-pio4.c: In function 'atmel_pinctrl_probe':
> pinctrl-at91-pio4.c:1003:41: warning: format '%u' expects argument of type 'unsigned int', but argument 5 has type 'resource_size_t {aka long long unsigned int}' [-Wformat=]
> dev_dbg(dev, "bank %i: hwirq=%u\n", i, res->start);
> This changes the format string to use the special "%pr" format
> string that prints a resource, and changes the arguments so we
> the resource structure directly. I'm also swapping out the arguments
> to match the text in the format string.

I agree the format change but not swapping out the arguments. Why do you have
the feeling they are not matching the text?

Few lines before you have:
res = platform_get_resource(pdev, IORESOURCE_IRQ, i);
atmel_pioctrl->irqs[i] = res->start;

Each bank has its own irq line this is what I want to print with hwirq.
Of course it assumes that interrupts are declared in the right order.



> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> diff --git a/drivers/pinctrl/pinctrl-at91-pio4.c b/drivers/pinctrl/pinctrl-at91-pio4.c
> index 33edd07d9149..23217e990eaf 100644
> --- a/drivers/pinctrl/pinctrl-at91-pio4.c
> +++ b/drivers/pinctrl/pinctrl-at91-pio4.c
> @@ -1000,7 +1000,7 @@ static int atmel_pinctrl_probe(struct platform_device *pdev)
> atmel_pioctrl->irqs[i] = res->start;
> irq_set_chained_handler(res->start, atmel_gpio_irq_handler);
> irq_set_handler_data(res->start, atmel_pioctrl);
> - dev_dbg(dev, "bank %i: hwirq=%u\n", i, res->start);
> + dev_dbg(dev, "bank %pr: hwirq=%u\n", res, i);
> }
> atmel_pioctrl->irq_domain = irq_domain_add_linear(dev->of_node,
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