linux-kernel - [PATCH v1 1/1] PM: hibernate: Remove unused stub for saveable_highmem

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Message-ID: <20240905184848.318978-1-andriy.shevchenko@linux.intel.com>
Date: Thu,  5 Sep 2024 21:48:48 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev
Cc: "Rafael J. Wysocki" <rafael@...nel.org>,
	Len Brown <len.brown@...el.com>,
	Pavel Machek <pavel@....cz>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/1] PM: hibernate: Remove unused stub for saveable_highmem_page()

When saveable_highmem_page() is unused, it prevents kernel builds
with clang, `make W=1` and CONFIG_WERROR=y:

kernel/power/snapshot.c:1369:21: error: unused function 'saveable_highmem_page' [-Werror,-Wunused-function]
 1369 | static inline void *saveable_highmem_page(struct zone *z, unsigned long p)
      |                     ^~~~~~~~~~~~~~~~~~~~~

Fix this by removing unused stub.

See also commit 6863f5643dd7 ("kbuild: allow Clang to find unused static
inline functions for W=1 build").

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 kernel/power/snapshot.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 405eddbda4fc..30894d8f0a78 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1365,11 +1365,6 @@ static unsigned int count_highmem_pages(void)
 	}
 	return n;
 }
-#else
-static inline void *saveable_highmem_page(struct zone *z, unsigned long p)
-{
-	return NULL;
-}
 #endif /* CONFIG_HIGHMEM */
 
 /**
-- 
2.43.0.rc1.1336.g36b5255a03ac