From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794063020; b=BO2jQdvXuFvhIevr0nWi56APKocuOpbHZXVPyHEIJhvYJlwSFB7QzdQ7ows/nqVlSY5H qBm1Cc/az59jajDXJSmfuRyWkhDG+F4VifHsxRDrxR1fBFWsHLTa4cHumn0+T13aOJc4K rJg5kkiaSQT6PiUYmJslh5NlwpYnkMzyXgjWdMeGnrVmRaVeCwMKAVdIxkqNms73Xw5TV 6BcTA10zBia0tYWsbgPiDInD/xoAIOyrSzP+1fmbmdrBoh4R07OXQJaCv0bCJNYBGwkYM 0VxCuJnXDdm3Me5lqEyvnrejyQy1K5xqqiGYgUKFYHY0gYt7RFqQu0lzGQwS5/gmiFg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063020; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Transfer-Encoding; bh=XBsrx0mY6sS3nDsMu4QG7//IZkmGQfPBat77ZoR7I3I=; b=3zAIpLhHJ0h3Cbg22FnCGpDIoWmtp8JBSFGP6eVOGZLs7cbDs+vCjWTIvUZkaMC1OWn2 BWiXqfwl7MN0CqZs1q/AG0CHsSjSK1Apmnx+ewcpv9H+Dlw/UVQl0e0gq9zBP4aBPvUGl ctUxnXjPuc+VrQK1UbOki1AwJ1/EMaEN1KT9SjPre4UFTaJe6af12CBIiqnm/LNdvp6bi te66BHZMdiwX2G32Gw8I0LdNZSRww+LA/OOsWJUkJRfbkpG0pblascw4O5H5kZaWWpnh+ SsWpBXrFDxSme6EybDi2dQJjH0oPsnvq43MaZsx4Gtmm4fooBeiYoL/Wx+2G77OT2AQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=2GaNKMO6; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 80D29606D827; Sat, 7 Nov 2026 14:50:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=2GaNKMO6 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2D3801F0089F; Sat, 7 Nov 2026 14:50:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063020; bh=XBsrx0mY6sS3nDsMu4QG7//IZkmGQfPBat77ZoR7I3I=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=2GaNKMO60UmyZwNyu8/qswRY4jbUu6E7uO86Hys9Q0TLWTdJ7lD9cf6JZA7igl6Uj aqhTbhlxW8ljWNTdTCfdJV+RGtFycqdeqRi/p9xgTUmtdds9oeBQZ5UTveJd4mg+BE FppQo/7/ebYE1lTeTN9Zq6NN9vDjEoch0iECzFDo= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tiezhu Yang , Huacai Chen , Namhyung Kim , Bibo Mao , Huacai Chen , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH 6.18 233/869] perf loongarch: Fix discarded const qualifier in _get_field() Date: Sat, 7 Nov 2026 08:48:35 -0500 Message-ID: <20261107134859.730495269@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134852.069646174@linuxfoundation.org> References: <20261107134852.069646174@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tiezhu Yang [ Upstream commit ed1293302f811fa709897d4a90ad78592938e4aa ] When building perf on LoongArch, the following compilation errors occur: CC arch/loongarch/util/header.o arch/loongarch/util/header.c: In function '_get_field': arch/loongarch/util/header.c:31:15: error: assignment discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers] 31 | line2 = strrchr(line, ' '); | ^ arch/loongarch/util/header.c:36:12: error: assignment discards 'const' qualifier from pointer target type [-Werror=discarded-qualifiers] 36 | nl = strrchr(line, '\n'); | ^ cc1: all warnings being treated as errors Declare 'line2' and 'nl' as const char * to ensure type safety. In modern glibc versions, strrchr() returns a 'const char *' if the input string is const. This is similar to commit 7378b6656aa4 ("perf riscv: Fix discarded const qualifier in _get_field()"). Fixes: 492ac37fa38faf52 ("perf kvm: Add kvm-stat for loongarch64") Signed-off-by: Tiezhu Yang Acked-by: Huacai Chen Acked-by: Namhyung Kim Cc: Bibo Mao Cc: Huacai Chen Cc: stable@vger.kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/arch/loongarch/util/header.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/arch/loongarch/util/header.c b/tools/perf/arch/loongarch/util/header.c index 0c6d823334a21..46f53a74f71e8 100644 --- a/tools/perf/arch/loongarch/util/header.c +++ b/tools/perf/arch/loongarch/util/header.c @@ -26,7 +26,7 @@ static char *_get_field(const char *line) { - char *line2, *nl; + const char *line2, *nl; line2 = strrchr(line, ' '); if (!line2) -- 2.53.0