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genirq/irq_sim: Shrink code by using <linux/cleanup.h> helpers 

Use the new __free() mechanism to remove all gotos and simplify the error
paths.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20240122124243.44002-5-brgl@bgdev.pl
This commit is contained in:
Bartosz Golaszewski 2024-01-22 13:42:43 +01:00 committed by Ingo Molnar
parent 8dab7fd47e
commit aafd753555
1 changed files with 10 additions and 15 deletions
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25
kernel/irq/irq_sim.c
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@ -4,6 +4,7 @@
* Copyright (C) 2020 Bartosz Golaszewski <bgolaszewski@baylibre.com>
*/
#include <linux/cleanup.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irq_sim.h>
@ -163,33 +164,27 @@ static const struct irq_domain_ops irq_sim_domain_ops = {
struct irq_domain *irq_domain_create_sim(struct fwnode_handle *fwnode,
unsigned int num_irqs)
{
struct irq_sim_work_ctx *work_ctx;
struct irq_sim_work_ctx *work_ctx __free(kfree) =
kmalloc(sizeof(*work_ctx), GFP_KERNEL);
work_ctx = kmalloc(sizeof(*work_ctx), GFP_KERNEL);
if (!work_ctx)
goto err_out;
return ERR_PTR(-ENOMEM);
work_ctx->pending = bitmap_zalloc(num_irqs, GFP_KERNEL);
if (!work_ctx->pending)
goto err_free_work_ctx;
unsigned long *pending __free(bitmap) = bitmap_zalloc(num_irqs, GFP_KERNEL);
if (!pending)
return ERR_PTR(-ENOMEM);
work_ctx->domain = irq_domain_create_linear(fwnode, num_irqs,
&irq_sim_domain_ops,
work_ctx);
if (!work_ctx->domain)
goto err_free_bitmap;
return ERR_PTR(-ENOMEM);
work_ctx->irq_count = num_irqs;
work_ctx->work = IRQ_WORK_INIT_HARD(irq_sim_handle_irq);
work_ctx->pending = no_free_ptr(pending);
return work_ctx->domain;
err_free_bitmap:
bitmap_free(work_ctx->pending);
err_free_work_ctx:
kfree(work_ctx);
err_out:
return ERR_PTR(-ENOMEM);
return no_free_ptr(work_ctx)->domain;
}
EXPORT_SYMBOL_GPL(irq_domain_create_sim);