From fae2570d629cdd72f0611d015fc4ba705ae5422b Mon Sep 17 00:00:00 2001 From: Kai Song Date: Wed, 6 Oct 2021 22:19:26 +0800 Subject: 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: d12edf9661a4 ("mfd: altera-sysmgr: Use resource_size function on resource object") Signed-off-by: Kai Song Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20211006141926.6120-1-songkai01@inspur.com --- drivers/mfd/altera-sysmgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mfd') diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c index 20cb294c7512..5d3715a28b28 100644 --- a/drivers/mfd/altera-sysmgr.c +++ b/drivers/mfd/altera-sysmgr.c @@ -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); } -- cgit