acpi_os_ioremap() currently is a wrapper to memremap() on
RISC-V. But the callers of acpi_os_ioremap() expect it to
return __iomem address and hence sparse tool reports a new
warning. Fix this issue by type casting to __iomem type.
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Fixes: a91a9ffbd3a5 ("RISC-V: Add support to build the ACPI core")
Signed-off-by: Sunil V L <[email protected]>
---
Changes since v2:
1) Removed unnecessary __force.
2) Removed unnecessary space after cast to fix checkpatch --strict warning.
Changes since v1:
1) Removed enhancements from the fix patch.
arch/riscv/include/asm/acpi.h | 2 +-
arch/riscv/kernel/acpi.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/riscv/include/asm/acpi.h b/arch/riscv/include/asm/acpi.h
index f71ce21ff684..d5604d2073bc 100644
--- a/arch/riscv/include/asm/acpi.h
+++ b/arch/riscv/include/asm/acpi.h
@@ -19,7 +19,7 @@ typedef u64 phys_cpuid_t;
#define PHYS_CPUID_INVALID INVALID_HARTID
/* ACPI table mapping after acpi_permanent_mmap is set */
-void *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
+void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size);
#define acpi_os_ioremap acpi_os_ioremap
#define acpi_strict 1 /* No out-of-spec workarounds on RISC-V */
diff --git a/arch/riscv/kernel/acpi.c b/arch/riscv/kernel/acpi.c
index 5ee03ebab80e..56cb2c986c48 100644
--- a/arch/riscv/kernel/acpi.c
+++ b/arch/riscv/kernel/acpi.c
@@ -215,9 +215,9 @@ void __init __acpi_unmap_table(void __iomem *map, unsigned long size)
early_iounmap(map, size);
}
-void *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
+void __iomem *acpi_os_ioremap(acpi_physical_address phys, acpi_size size)
{
- return memremap(phys, size, MEMREMAP_WB);
+ return (void __iomem *)memremap(phys, size, MEMREMAP_WB);
}
#ifdef CONFIG_PCI
--
2.39.2
On Mon, 24 Jul 2023 15:33:46 +0530, Sunil V L wrote:
> acpi_os_ioremap() currently is a wrapper to memremap() on
> RISC-V. But the callers of acpi_os_ioremap() expect it to
> return __iomem address and hence sparse tool reports a new
> warning. Fix this issue by type casting to __iomem type.
>
>
Applied, thanks!
[1/1] RISC-V: ACPI: Fix acpi_os_ioremap to return iomem address
https://git.kernel.org/palmer/c/568701fee366
Best regards,
--
Palmer Dabbelt <[email protected]>
Hello:
This patch was applied to riscv/linux.git (fixes)
by Palmer Dabbelt <[email protected]>:
On Mon, 24 Jul 2023 15:33:46 +0530 you wrote:
> acpi_os_ioremap() currently is a wrapper to memremap() on
> RISC-V. But the callers of acpi_os_ioremap() expect it to
> return __iomem address and hence sparse tool reports a new
> warning. Fix this issue by type casting to __iomem type.
>
> Reported-by: kernel test robot <[email protected]>
> Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
> Fixes: a91a9ffbd3a5 ("RISC-V: Add support to build the ACPI core")
> Signed-off-by: Sunil V L <[email protected]>
>
> [...]
Here is the summary with links:
- [v3,-fixes] RISC-V: ACPI: Fix acpi_os_ioremap to return iomem address
https://git.kernel.org/riscv/c/568701fee366
You are awesome, thank you!
--
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