[PATCH v1 -next 1/2] RISC-V: ACPI : Fix for usage of pointers in different address space

From: Sunil V L
Date: Mon Jun 05 2023 - 10:35:27 EST


The arch specific __acpi_map_table can be wrapper around either
early_memremap or early_ioremap. But early_memremap
routine works with normal pointers whereas __acpi_map_table expects
pointers in iomem address space. This causes kernel test bot to fail
while using the sparse tool. Fix the issue by using early_ioremap and
similar fix done for __acpi_unmap_table.

Signed-off-by: Sunil V L <sunilvl@xxxxxxxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202305201427.I7QhPjNW-lkp@xxxxxxxxx/
---
arch/riscv/kernel/acpi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/kernel/acpi.c b/arch/riscv/kernel/acpi.c
index df5a45a2eb93..5ee03ebab80e 100644
--- a/arch/riscv/kernel/acpi.c
+++ b/arch/riscv/kernel/acpi.c
@@ -204,7 +204,7 @@ void __init __iomem *__acpi_map_table(unsigned long phys, unsigned long size)
if (!size)
return NULL;

- return early_memremap(phys, size);
+ return early_ioremap(phys, size);
}

void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
@@ -212,7 +212,7 @@ void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
if (!map || !size)
return;

- early_memunmap(map, size);
+ early_iounmap(map, size);
}

void *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
--
2.34.1