From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 15D56C33C99 for ; Sun, 5 Jan 2020 02:52:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E0EFE2465A for ; Sun, 5 Jan 2020 02:52:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578192748; bh=14ajwVbMlY0SfFFuMpMoc9Aw5UqL29m6fRijmZpEQCY=; h=From:To:Cc:Subject:Date:List-ID:From; b=y9EFSnavzmDxNDXD2lKBIF3E9bT+ILo6YUjFIRGMx7Lv1BEKhND1YpyWEo7trKel0 eYfsGYaRe+yQQqleZ4cK7xlWVacmSyMjEvLpbN1H5xuQLoYV4MRHwf2bACnuWpS7a6 d74RsMpSftKDSRmJ/uLCEN3klatlmhvBkXwlB/K4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726427AbgAECw1 (ORCPT ); Sat, 4 Jan 2020 21:52:27 -0500 Received: from mail.kernel.org ([198.145.29.99]:42272 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726240AbgAECw0 (ORCPT ); Sat, 4 Jan 2020 21:52:26 -0500 Received: from localhost.localdomain (89.208.247.74.16clouds.com [89.208.247.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 2DA31215A4; Sun, 5 Jan 2020 02:52:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578192746; bh=14ajwVbMlY0SfFFuMpMoc9Aw5UqL29m6fRijmZpEQCY=; h=From:To:Cc:Subject:Date:From; b=UYYAYWFGK/QyuziUyK+QU8wQ1n3K8ToZplVGhLa2n2Kc2aqyLcQp92Cheif2CajGy X7XGulwYMsGiiu7Z1JRaA8xujippXhXXxmeu3i4X73zfrZbMvFW/sUwwWdiKCr5RE0 20JZhuQv664UIt1DPTDMGmiLsIwyCiZuOjuACS7M= From: guoren@kernel.org To: paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, Anup.Patel@wdc.com, vincent.chen@sifive.com, zong.li@sifive.com, greentime.hu@sifive.com, bmeng.cn@gmail.com, atish.patra@wdc.com Cc: linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, arnd@arndb.de, linux-csky@vger.kernel.org, linux-riscv@lists.infradead.org, Guo Ren Subject: [PATCH 1/2] riscv: Fixup obvious bug for fp-regs reset Date: Sun, 5 Jan 2020 10:52:14 +0800 Message-Id: <20200105025215.2522-1-guoren@kernel.org> X-Mailer: git-send-email 2.17.0 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Guo Ren CSR_MISA is defined in Privileged Architectures' spec: 3.1.1 Machine ISA Register misa. Every bit:1 indicate a feature, so we should beqz reset_done when there is no F/D bit in csr_msia register. Signed-off-by: Guo Ren --- arch/riscv/kernel/head.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S index 797802c73dee..2227db63f895 100644 --- a/arch/riscv/kernel/head.S +++ b/arch/riscv/kernel/head.S @@ -251,7 +251,7 @@ ENTRY(reset_regs) #ifdef CONFIG_FPU csrr t0, CSR_MISA andi t0, t0, (COMPAT_HWCAP_ISA_F | COMPAT_HWCAP_ISA_D) - bnez t0, .Lreset_regs_done + beqz t0, .Lreset_regs_done li t1, SR_FS csrs CSR_STATUS, t1 -- 2.17.0