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

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Date:   Mon,  5 Jun 2023 20:05:11 +0530
From:   Sunil V L <sunilvl@...tanamicro.com>
To:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Atish Patra <atishp@...shpatra.org>,
        Anup Patel <anup@...infault.org>,
        Will Deacon <will@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Sunil V L <sunilvl@...tanamicro.com>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH v1 -next 1/2] RISC-V: ACPI : Fix for usage of pointers in different address space

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@...tanamicro.com>
Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202305201427.I7QhPjNW-lkp@intel.com/
---
 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