linux-kernel - [PATCH] arm64/efi: fix variable 'si' set but not used

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Date:   Tue, 30 Jul 2019 17:23:48 -0400
From:   Qian Cai <cai@....pw>
To:     ard.biesheuvel@...aro.org
Cc:     will@...nel.org, catalin.marinas@....com,
        linux-efi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Qian Cai <cai@....pw>
Subject: [PATCH] arm64/efi: fix variable 'si' set but not used

GCC throws out this warning on arm64.

drivers/firmware/efi/libstub/arm-stub.c: In function 'efi_entry':
drivers/firmware/efi/libstub/arm-stub.c:132:22: warning: variable 'si'
set but not used [-Wunused-but-set-variable]

Fix it by making free_screen_info() a static inline function.

Signed-off-by: Qian Cai <cai@....pw>
---
 arch/arm64/include/asm/efi.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/include/asm/efi.h b/arch/arm64/include/asm/efi.h
index 8e79ce9c3f5c..76a144702586 100644
--- a/arch/arm64/include/asm/efi.h
+++ b/arch/arm64/include/asm/efi.h
@@ -105,7 +105,11 @@ static inline unsigned long efi_get_max_initrd_addr(unsigned long dram_base,
 	((protocol##_t *)instance)->f(instance, ##__VA_ARGS__)
 
 #define alloc_screen_info(x...)		&screen_info
-#define free_screen_info(x...)
+
+static inline void free_screen_info(efi_system_table_t *sys_table_arg,
+				    struct screen_info *si)
+{
+}
 
 /* redeclare as 'hidden' so the compiler will generate relative references */
 extern struct screen_info screen_info __attribute__((__visibility__("hidden")));
-- 
1.8.3.1