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mfd: altera-sysmgr: Fix a mistake caused by resource_size conversion 

The resource_size defines that:
	res->end - res->start + 1;
The origin original code is:
	sysmgr_config.max_register = res->end - res->start - 3;

So, the correct fix is that:
	sysmgr_config.max_register = resource_size(res) - 4;

Fixes: d12edf9661 ("mfd: altera-sysmgr: Use resource_size function on resource object")
Signed-off-by: Kai Song <songkai01@inspur.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211006141926.6120-1-songkai01@inspur.com
This commit is contained in:
Kai Song 2021-10-06 22:19:26 +08:00 committed by Lee Jones
parent 8616f7ee2c
commit fae2570d62
1 changed files with 1 additions and 1 deletions
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2
drivers/mfd/altera-sysmgr.c
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@ -153,7 +153,7 @@ static int sysmgr_probe(struct platform_device *pdev)
if (!base)
return -ENOMEM;
sysmgr_config.max_register = resource_size(res) - 3;
sysmgr_config.max_register = resource_size(res) - 4;
regmap = devm_regmap_init_mmio(dev, base, &sysmgr_config);
}