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iommu/arm-smmu: Use devm_request_irq and devm_free_irq

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Use devm_request_irq to simplify error handling path,
when probe smmu device.

Also devm_{request|free}_irq when init or destroy domain context.

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Peng Fan 2016-07-04 17:38:22 +08:00 committed by Will Deacon
parent 7c6d90e2bb
commit bee1400445
1 changed files with 10 additions and 14 deletions
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24
drivers/iommu/arm-smmu.c
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@ -987,8 +987,8 @@ static int arm_smmu_init_domain_context(struct iommu_domain *domain,
* handler seeing a half-initialised domain state.
*/
irq = smmu->irqs[smmu->num_global_irqs + cfg->irptndx];
ret = request_irq(irq, arm_smmu_context_fault, IRQF_SHARED,
"arm-smmu-context-fault", domain);
ret = devm_request_irq(smmu->dev, irq, arm_smmu_context_fault,
IRQF_SHARED, "arm-smmu-context-fault", domain);
if (ret < 0) {
dev_err(smmu->dev, "failed to request context IRQ %d (%u)\n",
cfg->irptndx, irq);
@ -1028,7 +1028,7 @@ static void arm_smmu_destroy_domain_context(struct iommu_domain *domain)
if (cfg->irptndx != INVALID_IRPTNDX) {
irq = smmu->irqs[smmu->num_global_irqs + cfg->irptndx];
free_irq(irq, domain);
devm_free_irq(smmu->dev, irq, domain);
}
free_io_pgtable_ops(smmu_domain->pgtbl_ops);
@ -1986,15 +1986,15 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
}
for (i = 0; i < smmu->num_global_irqs; ++i) {
err = request_irq(smmu->irqs[i],
arm_smmu_global_fault,
IRQF_SHARED,
"arm-smmu global fault",
smmu);
err = devm_request_irq(smmu->dev, smmu->irqs[i],
arm_smmu_global_fault,
IRQF_SHARED,
"arm-smmu global fault",
smmu);
if (err) {
dev_err(dev, "failed to request global IRQ %d (%u)\n",
i, smmu->irqs[i]);
goto out_free_irqs;
goto out_put_masters;
}
}
@ -2006,10 +2006,6 @@ static int arm_smmu_device_dt_probe(struct platform_device *pdev)
arm_smmu_device_reset(smmu);
return 0;
out_free_irqs:
while (i--)
free_irq(smmu->irqs[i], smmu);
out_put_masters:
for (node = rb_first(&smmu->masters); node; node = rb_next(node)) {
struct arm_smmu_master *master
@ -2050,7 +2046,7 @@ static int arm_smmu_device_remove(struct platform_device *pdev)
dev_err(dev, "removing device with active domains!\n");
for (i = 0; i < smmu->num_global_irqs; ++i)
free_irq(smmu->irqs[i], smmu);
devm_free_irq(smmu->dev, smmu->irqs[i], smmu);
/* Turn the thing off */
writel(sCR0_CLIENTPD, ARM_SMMU_GR0_NS(smmu) + ARM_SMMU_GR0_sCR0);