From: Huang Pei huangpei@loongson.cn
[ Upstream commit 509d36a941a3466b78d4377913623d210b162458 ]
When page size larger than 16KB, arguments "vaddr + size(16KB)" in "ioremap_page_range(vaddr, vaddr + size,...)" called by "add_legacy_isa_io" is not page-aligned.
As loongson64 needs at least page size 16KB to get rid of cache alias, and "vaddr" is 64KB-aligned, and 64KB is largest page size supported, rounding "size" up to PAGE_SIZE is enough for all page size supported.
Fixes: 6d0068ad15e4 ("MIPS: Loongson64: Process ISA Node in DeviceTree") Signed-off-by: Huang Pei huangpei@loongson.cn Acked-by: Jiaxun Yang jiaxun.yang@flygoat.com Signed-off-by: Thomas Bogendoerfer tsbogend@alpha.franken.de Signed-off-by: Sasha Levin sashal@kernel.org --- arch/mips/loongson64/init.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/mips/loongson64/init.c b/arch/mips/loongson64/init.c index cfa788bca871..1c664b23c0f9 100644 --- a/arch/mips/loongson64/init.c +++ b/arch/mips/loongson64/init.c @@ -126,7 +126,7 @@ static int __init add_legacy_isa_io(struct fwnode_handle *fwnode, resource_size_ return -ENOMEM;
range->fwnode = fwnode; - range->size = size; + range->size = size = round_up(size, PAGE_SIZE); range->hw_start = hw_start; range->flags = LOGIC_PIO_CPU_MMIO;