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drivers/perf: arm-ccn: Use devm_ioremap_resource() to map memory 

Instead of checking the return value of platform_get_resource(), we can
use devm_ioremap_resource() which has the NULL pointer check and the
memory region requesting. devm_ioremap_resource is designed to replace
calls to devm_request_mem_region followed by devm_ioremap, so let's use
the same.

Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Sudeep Holla 2018-07-26 12:23:31 +01:00 committed by Will Deacon
parent 06060ea7fb
commit 809092dc3e
1 changed files with 3 additions and 11 deletions
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14
drivers/perf/arm-ccn.c
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@ -1485,17 +1485,9 @@ static int arm_ccn_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, ccn);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -EINVAL;
if (!devm_request_mem_region(ccn->dev, res->start,
resource_size(res), pdev->name))
return -EBUSY;
ccn->base = devm_ioremap(ccn->dev, res->start,
resource_size(res));
if (!ccn->base)
return -EFAULT;
ccn->base = devm_ioremap_resource(ccn->dev, res);
if (IS_ERR(ccn->base))
return PTR_ERR(ccn->base);
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!res)