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=1794063724; b=hpcXaoYuXH/kFCAVW5Ij3nOZ7tfDnXtgkGkkH48it0Hww03QZoIomt8w1QkzLuLV84Fx L0ElJDP27WtiPpnKm2MPS7m82WPFixoe8BSAQ2e+L5q/GQnevvLMC/vcjUM1btD6+EPD/ CFewo4rAfWCcJvRDshCuiJ4WZub3SO9c61eD9EgJsddrR8RLpldo3rKce/6OdXXfdKaHs fb6Q7c5sb6QBFCz/EHu8q2WN92xjRwMtRXg8smDNnJTTe+4S7exPxvIYK6wb84tOwVLAz tsoUCJmDUcDrHVE8aDlXEyeCoMHBtVqqMWGAx72GA4uabLtcoS2PGkjQf0XAEIHPtGg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063724; 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=MQpw2JyXWUUQOz+YJKXEyou5IGG8IGVi8KmC42yt9CE=; b=cnOGHexsLY/cZ2EigKMSCEp3W6MYYdgK4bxQ+XpQh7Y5ep4ofMVQD4TmKYW4OXhka0Gy iwaEmK3TUxJmiimzFCqXyZM6y17iNzC86yZL9ahQplUA+eJkBVauEV+z+QpakWttCznh2 2XuEPApLj+e+ElZncPuBsLLHGqmg7yqTs3bZLfrdVgDBhD6M1yWavL6fDP6krHHXZsWZV n0Xyg0pG3+JbGTbRVJxGJWfz4xPFyVVrL/aoXqlB44/aTaqCBYWl+IG+4ehhSsl0NBJtX E1Z3ZSDE+ObjspTf7VDLUhuF8vrYOYO2d+qj/WAMUMX9xSdSq4TrwXtLCuB32Nsb3Mg== 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=T6xNnFeW; 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 ED0C9606EEB0; Sat, 7 Nov 2026 15:02:03 +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=T6xNnFeW Received: by smtp.kernel.org (Postfix) with ESMTPSA id 60CA51F0089F; Sat, 7 Nov 2026 15:02:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063723; bh=MQpw2JyXWUUQOz+YJKXEyou5IGG8IGVi8KmC42yt9CE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=T6xNnFeWroXnmWd5f8TXDZGm8S+g/JHZptXuFb86wA6vm94fmQDi7lEFddZmTTCZf fKPx0yXc4O+RdCAhEgIQl4Hp5LD/SAi8Gc1o4auEjhV0NLjFV2OsNUFqHCDSTXMp4A U8dcRO/gmJwokuOUto/Y6E0DzUEIh3tkKdj5pguM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tiezhu Yang , Huacai Chen , Sasha Levin Subject: [PATCH 6.18 805/869] LoongArch: Remove redundant call in update_bp_registers() Date: Sat, 7 Nov 2026 08:58:07 -0500 Message-ID: <20261107134920.219533239@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 23534c6efeb718e8a4d9107fa7d6707b5b1f5859 ] In update_bp_registers(), there is a duplicate call to write_wb_reg() when enabling an execute breakpoint: write_wb_reg(CSR_CFG_CTRL, i, 0, CTRL_PLV_ENABLE); write_wb_reg(CSR_CFG_CTRL, i, 0, CTRL_PLV_ENABLE); The two lines are completely identical. Remove the redundant call to clean up the code and eliminate unnecessary register writes. Cc: stable@vger.kernel.org Fixes: edffa33c7bb5 ("LoongArch: Add hardware breakpoints/watchpoints support") Signed-off-by: Tiezhu Yang Signed-off-by: Huacai Chen Signed-off-by: Sasha Levin --- arch/loongarch/kernel/hw_breakpoint.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/loongarch/kernel/hw_breakpoint.c b/arch/loongarch/kernel/hw_breakpoint.c index c35f9bf380334..deeb2f9795705 100644 --- a/arch/loongarch/kernel/hw_breakpoint.c +++ b/arch/loongarch/kernel/hw_breakpoint.c @@ -453,7 +453,6 @@ static void update_bp_registers(struct pt_regs *regs, int enable, int type) if (enable) { if ((info->ctrl.type == LOONGARCH_BREAKPOINT_EXECUTE) && (type == 0)) { write_wb_reg(CSR_CFG_CTRL, i, 0, CTRL_PLV_ENABLE); - write_wb_reg(CSR_CFG_CTRL, i, 0, CTRL_PLV_ENABLE); } else { ctrl = read_wb_reg(CSR_CFG_CTRL, i, 1); if (info->ctrl.type == LOONGARCH_BREAKPOINT_LOAD) -- 2.53.0