Re: [PATCH] MIPS: Octeon: Delete an error message for a failed memory allocation in octeon_irq_init_

Joe Perches
2017-05-23T18:55:52Z

On Tue, 2017-05-23 at 20:10 +0200, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Tue, 23 May 2017 20:00:06 +0200
>
> Omit an extra message for a memory allocation failure in this function.
>
> This issue was detected by using the Coccinelle software.
>
> Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
> ---
> arch/mips/cavium-octeon/octeon-irq.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octeon-irq.c
> index c1eb1ff7c800..050c08ece5b6 100644
> --- a/arch/mips/cavium-octeon/octeon-irq.c
> +++ b/arch/mips/cavium-octeon/octeon-irq.c
> @@ -1615,7 +1615,6 @@ static int __init octeon_irq_init_gpio(
> irq_domain_add_linear(
> gpio_node, 16, &octeon_irq_domain_gpio_ops, gpiod);
> } else {
> - pr_warn("Cannot allocate memory for GPIO irq_domain.\n");
> return -ENOMEM;
> }

You really should reverse the test here and
unindent the first block.

Again: Don't be mindless.
Take the time to improve the code.
---
diff --git a/arch/mips/cavium-octeon/octeon-irq.c b/arch/mips/cavium-octeon/octe
index c1eb1ff7c800..2bdc750f2f2d 100644
--- a/arch/mips/cavium-octeon/octeon-irq.c
+++ b/arch/mips/cavium-octeon/octeon-irq.c
@@ -1609,15 +1609,13 @@ static int __init octeon_irq_init_gpio(
}

gpiod = kzalloc(sizeof(*gpiod), GFP_KERNEL);
- if (gpiod) {
- /* gpio domain host_data is the base hwirq number. */
- gpiod->base_hwirq = base_hwirq;
- irq_domain_add_linear(
- gpio_node, 16, &octeon_irq_domain_gpio_ops, gpiod);
- } else {
- pr_warn("Cannot allocate memory for GPIO irq_domain.\n");
+ if (!gpiod)
return -ENOMEM;
- }
+
+ /* gpio domain host_data is the base hwirq number. */
+ gpiod->base_hwirq = base_hwirq;
+ irq_domain_add_linear(gpio_node, 16,
+ &octeon_irq_domain_gpio_ops, gpiod);

/*
* Clear the OF_POPULATED flag that was set by of_irq_init()

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