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irqchip: intc-irqpin: Make use of devm functions

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Use devm_kzalloc(), devm_ioremap_nocache()
and devm_request_irq() to simplify error
handling.

Signed-off-by: Magnus Damm <damm@opensource.se>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Magnus Damm 2013-02-26 20:59:13 +09:00 committed by Simon Horman
parent d1b6aecde4
commit 08eba5ba4f
1 changed files with 13 additions and 28 deletions
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41
drivers/irqchip/irq-renesas-intc-irqpin.c
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@ -294,7 +294,7 @@ static int intc_irqpin_probe(struct platform_device *pdev)
int ret;
int k;
p = kzalloc(sizeof(*p), GFP_KERNEL);
p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL);
if (!p) {
dev_err(&pdev->dev, "failed to allocate driver data\n");
ret = -ENOMEM;
@ -316,7 +316,7 @@ static int intc_irqpin_probe(struct platform_device *pdev)
if (!io[k]) {
dev_err(&pdev->dev, "not enough IOMEM resources\n");
ret = -EINVAL;
goto err1;
goto err0;
}
}
@ -334,7 +334,7 @@ static int intc_irqpin_probe(struct platform_device *pdev)
if (p->number_of_irqs < 1) {
dev_err(&pdev->dev, "not enough IRQ resources\n");
ret = -EINVAL;
goto err1;
goto err0;
}
/* ioremap IOMEM and setup read/write callbacks */
@ -355,14 +355,15 @@ static int intc_irqpin_probe(struct platform_device *pdev)
default:
dev_err(&pdev->dev, "IOMEM size mismatch\n");
ret = -EINVAL;
goto err2;
goto err0;
}
i->iomem = ioremap_nocache(io[k]->start, resource_size(io[k]));
i->iomem = devm_ioremap_nocache(&pdev->dev, io[k]->start,
resource_size(io[k]));
if (!i->iomem) {
dev_err(&pdev->dev, "failed to remap IOMEM\n");
ret = -ENXIO;
goto err2;
goto err0;
}
}
@ -395,17 +396,17 @@ static int intc_irqpin_probe(struct platform_device *pdev)
if (!p->irq_domain) {
ret = -ENXIO;
dev_err(&pdev->dev, "cannot initialize irq domain\n");
goto err2;
goto err0;
}
/* request and set priority on interrupts one by one */
for (k = 0; k < p->number_of_irqs; k++) {
if (request_irq(p->irq[k].requested_irq,
intc_irqpin_irq_handler,
0, name, &p->irq[k])) {
if (devm_request_irq(&pdev->dev, p->irq[k].requested_irq,
intc_irqpin_irq_handler,
0, name, &p->irq[k])) {
dev_err(&pdev->dev, "failed to request low IRQ\n");
ret = -ENOENT;
goto err3;
goto err1;
}
intc_irqpin_mask_unmask_prio(p, k, 0);
}
@ -421,16 +422,8 @@ static int intc_irqpin_probe(struct platform_device *pdev)
return 0;
err3:
for (; k >= 0; k--)
free_irq(p->irq[k - 1].requested_irq, &p->irq[k - 1]);
irq_domain_remove(p->irq_domain);
err2:
for (k = 0; k < INTC_IRQPIN_REG_NR; k++)
iounmap(p->iomem[k].iomem);
err1:
kfree(p);
irq_domain_remove(p->irq_domain);
err0:
return ret;
}
@ -438,17 +431,9 @@ err0:
static int intc_irqpin_remove(struct platform_device *pdev)
{
struct intc_irqpin_priv *p = platform_get_drvdata(pdev);
int k;
for (k = 0; k < p->number_of_irqs; k++)
free_irq(p->irq[k].requested_irq, &p->irq[k]);
irq_domain_remove(p->irq_domain);
for (k = 0; k < INTC_IRQPIN_REG_NR; k++)
iounmap(p->iomem[k].iomem);
kfree(p);
return 0;
}