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drivers: CCI: fix the error handle in cci_pmu_probe() 

This patch fix the error handle of function cci_pmu_probe():
- using IS_ERR() instead of NULL test for the return value of
  devm_ioremap_resource() since it nerver return NULL.
- remove kfree() for devm_kzalloc allocated memory
- remove dev_warn() since devm_ioremap_resource() has error message
  already.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Wei Yongjun 2013-09-22 06:04:23 +01:00 committed by Will Deacon
parent b91c8f284a
commit fee4f2c66a
1 changed files with 7 additions and 26 deletions
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33
drivers/bus/arm-cci.c
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@ -565,18 +565,9 @@ static int cci_pmu_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_warn(&pdev->dev, "Failed to get mem resource\n");
ret = -EINVAL;
goto memalloc_err;
};
pmu->base = devm_ioremap_resource(&pdev->dev, res);
if (!pmu->base) {
dev_warn(&pdev->dev, "Failed to ioremap\n");
ret = -ENOMEM;
goto memalloc_err;
}
if (IS_ERR(pmu->base))
return -ENOMEM;
/*
* CCI PMU has 5 overflow signals - one per counter; but some may be tied
@ -601,22 +592,18 @@ static int cci_pmu_probe(struct platform_device *pdev)
if (i < CCI_PMU_MAX_HW_EVENTS) {
dev_warn(&pdev->dev, "In-correct number of interrupts: %d, should be %d\n",
i, CCI_PMU_MAX_HW_EVENTS);
ret = -EINVAL;
goto memalloc_err;
return -EINVAL;
}
pmu->port_ranges = port_range_by_rev();
if (!pmu->port_ranges) {
dev_warn(&pdev->dev, "CCI PMU version not supported\n");
ret = -EINVAL;
goto memalloc_err;
return -EINVAL;
}
pmu->cci_pmu = devm_kzalloc(&pdev->dev, sizeof(*(pmu->cci_pmu)), GFP_KERNEL);
if (!pmu->cci_pmu) {
ret = -ENOMEM;
goto memalloc_err;
}
if (!pmu->cci_pmu)
return -ENOMEM;
pmu->hw_events.events = pmu->events;
pmu->hw_events.used_mask = pmu->used_mask;
@ -624,15 +611,9 @@ static int cci_pmu_probe(struct platform_device *pdev)
ret = cci_pmu_init(pmu->cci_pmu, pdev);
if (ret)
goto pmuinit_err;
return ret;
return 0;
pmuinit_err:
kfree(pmu->cci_pmu);
memalloc_err:
kfree(pmu);
return ret;
}
static int cci_platform_probe(struct platform_device *pdev)