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misc: vexpress/syscfg: 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: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sudeep Holla 2018-07-11 16:41:10 +01:00 committed by Greg Kroah-Hartman
parent 3772e5da44
commit 555e7943f2
1 changed files with 3 additions and 7 deletions
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10
drivers/misc/vexpress-syscfg.c
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@ -258,13 +258,9 @@ static int vexpress_syscfg_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&syscfg->funcs);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!devm_request_mem_region(&pdev->dev, res->start,
resource_size(res), pdev->name))
return -EBUSY;
syscfg->base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
if (!syscfg->base)
return -EFAULT;
syscfg->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(syscfg->base))
return PTR_ERR(syscfg->base);
/* Must use dev.parent (MFD), as that's where DT phandle points at... */
bridge = vexpress_config_bridge_register(pdev->dev.parent,