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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6C458C433FE for ; Tue, 16 Nov 2021 00:33:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 56C12619E1 for ; Tue, 16 Nov 2021 00:33:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348312AbhKPAgS (ORCPT ); Mon, 15 Nov 2021 19:36:18 -0500 Received: from mail.kernel.org ([198.145.29.99]:45398 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344477AbhKOTYs (ORCPT ); Mon, 15 Nov 2021 14:24:48 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id D6AD463494; Mon, 15 Nov 2021 18:58:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1637002709; bh=uj3be2jnkynNNKzMJN5Qux/b8GpDfGfJPhtpcRs3kD0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fcUxh2edUzGsXKfhrtWD0eVFiPb0C5I4oWXKFft684RdEHIJJPwCrmjc5h7YOJGls cRLPr7hqYXyALCyX/qli3yVrIbTGTAxpidJG2vxejpjE5uwAi4swRBgsVlRILSY5HP JDYTtcQzretugUTBKAayj3HTSG98na9fdjd8V+28= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Geert Uytterhoeven , Sasha Levin Subject: [PATCH 5.15 635/917] pinctrl: renesas: checker: Fix off-by-one bug in drive register check Date: Mon, 15 Nov 2021 18:02:10 +0100 Message-Id: <20211115165450.343567880@linuxfoundation.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211115165428.722074685@linuxfoundation.org> References: <20211115165428.722074685@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Geert Uytterhoeven [ Upstream commit 28e7f8ff90583791a034d43b5d2e3fe394142e13 ] The GENMASK(h, l) macro creates a contiguous bitmask starting at bit position @l and ending at position @h, inclusive. This did not trigger any error checks, as the individual register fields cover at most 3 of the 4 available bits. Fixes: 08df16e07ad0a1ec ("pinctrl: sh-pfc: checker: Add drive strength register checks") Signed-off-by: Geert Uytterhoeven Link: https://lore.kernel.org/r/8f82d6147fbe3367d4c83962480e97f58d9c96a2.1633615652.git.geert+renesas@glider.be Signed-off-by: Sasha Levin --- drivers/pinctrl/renesas/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pinctrl/renesas/core.c b/drivers/pinctrl/renesas/core.c index f2ab02225837e..f29130957e49a 100644 --- a/drivers/pinctrl/renesas/core.c +++ b/drivers/pinctrl/renesas/core.c @@ -890,7 +890,7 @@ static void __init sh_pfc_check_drive_reg(const struct sh_pfc_soc_info *info, if (!field->pin && !field->offset && !field->size) continue; - mask = GENMASK(field->offset + field->size, field->offset); + mask = GENMASK(field->offset + field->size - 1, field->offset); if (mask & seen) sh_pfc_err("drive_reg 0x%x: field %u overlap\n", drive->reg, i); -- 2.33.0