linux-kernel - [PATCH 1/4] asm-generic/page.h: apply page shift to PFN instead of VA in pfn_to

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Message-Id: <20240131055740.2579-1-yan.y.zhao@intel.com>
Date: Wed, 31 Jan 2024 13:57:40 +0800
From: Yan Zhao <yan.y.zhao@...el.com>
To: arnd@...db.de,
	linus.walleij@...aro.org,
	guoren@...nel.org,
	bcain@...cinc.com,
	jonas@...thpole.se,
	stefan.kristiansson@...nalahti.fi,
	shorne@...il.com
Cc: linux-arch@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-csky@...r.kernel.org,
	linux-hexagon@...r.kernel.org,
	linux-openrisc@...r.kernel.org,
	Yan Zhao <yan.y.zhao@...el.com>
Subject: [PATCH 1/4] asm-generic/page.h: apply page shift to PFN instead of VA in pfn_to_virt

Apply the page shift to PFN to get physical address for final VA.
The macro __va should take physical address instead of PFN as input.

Fixes: 2d78057f0dd4 ("asm-generic/page.h: Make pfn accessors static inlines")
Signed-off-by: Yan Zhao <yan.y.zhao@...el.com>
---
 include/asm-generic/page.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h
index 9773582fd96e..4f1265207b9a 100644
--- a/include/asm-generic/page.h
+++ b/include/asm-generic/page.h
@@ -81,7 +81,7 @@ static inline unsigned long virt_to_pfn(const void *kaddr)
 #define virt_to_pfn virt_to_pfn
 static inline void *pfn_to_virt(unsigned long pfn)
 {
-	return __va(pfn) << PAGE_SHIFT;
+	return __va(pfn << PAGE_SHIFT);
 }
 #define pfn_to_virt pfn_to_virt
 
-- 
2.17.1