linux-kernel - [PATCH] MIPS: Remove unnecessary zero-length struct member

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Message-ID: <20250411090032.7844-1-thorsten.blum@linux.dev>
Date: Fri, 11 Apr 2025 11:00:32 +0200
From: Thorsten Blum <thorsten.blum@...ux.dev>
To: Oleg Nesterov <oleg@...hat.com>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: Thorsten Blum <thorsten.blum@...ux.dev>,
	linux-mips@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] MIPS: Remove unnecessary zero-length struct member

Remove the zero-length struct member '__last' and use sizeof() to
calculate the value for MAX_REG_OFFSET.

No functional changes intended.

Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev>
---
 arch/mips/include/asm/ptrace.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
index 85fa9962266a..1bb10ee8c2ce 100644
--- a/arch/mips/include/asm/ptrace.h
+++ b/arch/mips/include/asm/ptrace.h
@@ -48,7 +48,6 @@ struct pt_regs {
 	unsigned long long mpl[6];        /* MTM{0-5} */
 	unsigned long long mtp[6];        /* MTP{0-5} */
 #endif
-	unsigned long __last[0];
 } __aligned(8);
 
 static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
@@ -65,7 +64,7 @@ static inline void instruction_pointer_set(struct pt_regs *regs,
 
 /* Query offset/name of register from its name/offset */
 extern int regs_query_register_offset(const char *name);
-#define MAX_REG_OFFSET (offsetof(struct pt_regs, __last))
+#define MAX_REG_OFFSET (sizeof(struct pt_regs))
 
 /**
  * regs_get_register() - get register value from its offset
-- 
2.49.0