[PATCH] RISC-V: Remove IORESOURCE_BUSY flag for no-map reserved memory

[Xianting Tian]

Commit 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
added IORESOURCE_BUSY flag for no-map reserved memory, this casued
devm_ioremap_resource() failed for the no-map reserved memory in subsequent
operations of related driver, so remove the IORESOURCE_BUSY flag.

The code to reproduce the issue,
dts:
	mem0: memory at a0000000 {
                reg = <0x0 0xa0000000 0 0x1000000>;
                no-map;
        };

	&test {
		status = "okay";
		memory-region = <&mem0>;
	};

code:
	np = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
	ret = of_address_to_resource(np, 0, &r);
	base = devm_ioremap_resource(&pdev->dev, &r);
	// base = -EBUSY

Fixes: 00ab027a3b82 ("RISC-V: Add kernel image sections to the resource tree")
Reported-by: Huaming Jiang <jianghuaming.jhm at alibaba-inc.com>
Reviewed-by: Guo Ren <guoren at kernel.org>
CC: Nick Kossifidis <mick at ics.forth.gr>
Signed-off-by: Xianting Tian <xianting.tian at linux.alibaba.com>
---
 arch/riscv/kernel/setup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 834eb652a7b9..71f2966b1474 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -214,7 +214,7 @@ static void __init init_resources(void)
 
 		if (unlikely(memblock_is_nomap(region))) {
 			res->name = "Reserved";
-			res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+			res->flags = IORESOURCE_MEM;
 		} else {
 			res->name = "System RAM";
 			res->flags = IORESOURCE_SYSTEM_RAM | IORESOURCE_BUSY;
-- 
2.17.1