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authorSudeep Holla <sudeep.holla@arm.com>2018-07-26 14:23:31 +0300
committerWill Deacon <will.deacon@arm.com>2018-07-26 15:33:49 +0300
commit809092dc3e606f3508b53baa624b27bfff8f0e7f (patch)
tree3c274dc0b842bead539aceaee20a53edaaefe64b /drivers/perf
parent06060ea7fb5b6b9b4c3251e0dcabbcca8ad91674 (diff)
downloadlinux-809092dc3e606f3508b53baa624b27bfff8f0e7f.tar.xz
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>
Diffstat (limited to 'drivers/perf')
-rw-r--r--drivers/perf/arm-ccn.c14
1 files changed, 3 insertions, 11 deletions
diff --git a/drivers/perf/arm-ccn.c b/drivers/perf/arm-ccn.c
index b416ee18e6bb..4b15c36f4631 100644
--- a/drivers/perf/arm-ccn.c
+++ b/drivers/perf/arm-ccn.c
@@ -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)