linux-kernel - [PATCH 2/2] powerpc: xmon: remove unused variables

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Date:   Wed,  9 Aug 2023 15:10:09 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Nicholas Piggin <npiggin@...il.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nathan Lynch <nathanl@...ux.ibm.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Hugh Dickins <hughd@...gle.com>, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 2/2] powerpc: xmon: remove unused variables

From: Arnd Bergmann <arnd@...db.de>

Randconfig testing with W=1 showed up these warnings that I'd like to enable
by default:

arch/powerpc/xmon/xmon.c: In function 'dump_tlb_book3e':
arch/powerpc/xmon/xmon.c:3833:42: error: variable 'lrat' set but not used [-Werror=unused-but-set-variable]
 3833 |  int i, tlb, ntlbs, pidsz, lpidsz, rasz, lrat = 0;
      |                                          ^~~~
arch/powerpc/xmon/xmon.c:3831:23: error: variable 'lpidmask' set but not used [-Werror=unused-but-set-variable]
 3831 |  u32 mmucfg, pidmask, lpidmask;
      |                       ^~~~~~~~
arch/powerpc/xmon/xmon.c:3831:14: error: variable 'pidmask' set but not used [-Werror=unused-but-set-variable]
 3831 |  u32 mmucfg, pidmask, lpidmask;
      |              ^~~~~~~

Just remove these as they have been unused since the code was added in 2010.

Fixes: 03247157f7391 ("powerpc/book3e: Add TLB dump in xmon for Book3E")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 arch/powerpc/xmon/xmon.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 9e12b75850d75..e35f13842ce15 100644
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -3828,9 +3828,9 @@ static void dump_tlb_44x(void)
 #ifdef CONFIG_PPC_BOOK3E_64
 static void dump_tlb_book3e(void)
 {
-	u32 mmucfg, pidmask, lpidmask;
+	u32 mmucfg;
 	u64 ramask;
-	int i, tlb, ntlbs, pidsz, lpidsz, rasz, lrat = 0;
+	int i, tlb, ntlbs, pidsz, lpidsz, rasz;
 	int mmu_version;
 	static const char *pgsz_names[] = {
 		"  1K",
@@ -3874,12 +3874,8 @@ static void dump_tlb_book3e(void)
 	pidsz = ((mmucfg >> 6) & 0x1f) + 1;
 	lpidsz = (mmucfg >> 24) & 0xf;
 	rasz = (mmucfg >> 16) & 0x7f;
-	if ((mmu_version > 1) && (mmucfg & 0x10000))
-		lrat = 1;
 	printf("Book3E MMU MAV=%d.0,%d TLBs,%d-bit PID,%d-bit LPID,%d-bit RA\n",
 	       mmu_version, ntlbs, pidsz, lpidsz, rasz);
-	pidmask = (1ul << pidsz) - 1;
-	lpidmask = (1ul << lpidsz) - 1;
 	ramask = (1ull << rasz) - 1;
 
 	for (tlb = 0; tlb < ntlbs; tlb++) {
-- 
2.39.2