[PATCH 03/12] ARC: init: Pass a pointer to virt_to_pfn() in init

Linus Walleij
2023-05-11T12:00:20Z

Functions that work on a pointer to virtual memory such as
virt_to_pfn() and users of that function such as
virt_to_page() are supposed to pass a pointer to virtual
memory, ideally a (void *) or other pointer. However since
many architectures implement virt_to_pfn() as a macro,
this function becomes polymorphic and accepts both a
(unsigned long) and a (void *).

Fix up the offending call in arch/arc with an explicit cast.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
arch/arc/mm/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arc/mm/init.c b/arch/arc/mm/init.c
index 2b89b6c53801..9f64d729c9f8 100644
--- a/arch/arc/mm/init.c
+++ b/arch/arc/mm/init.c
@@ -87,7 +87,7 @@ void __init setup_arch_memory(void)
setup_initial_init_mm(_text, _etext, _edata, _end);

/* first page of system - kernel .vector starts here */
- min_low_pfn = virt_to_pfn(CONFIG_LINUX_RAM_BASE);
+ min_low_pfn = virt_to_pfn((void *)CONFIG_LINUX_RAM_BASE);

/* Last usable page of low mem */
max_low_pfn = max_pfn = PFN_DOWN(low_mem_start + low_mem_sz);

--
2.34.1