From patchwork Mon Dec 10 07:09:10 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lokesh Vutla X-Patchwork-Id: 1855361 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork2.kernel.org (Postfix) with ESMTP id 10697DFB79 for ; Mon, 10 Dec 2012 07:09:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752308Ab2LJHJd (ORCPT ); Mon, 10 Dec 2012 02:09:33 -0500 Received: from bear.ext.ti.com ([192.94.94.41]:45115 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752174Ab2LJHJb (ORCPT ); Mon, 10 Dec 2012 02:09:31 -0500 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by bear.ext.ti.com (8.13.7/8.13.7) with ESMTP id qBA79Oc3009162; Mon, 10 Dec 2012 01:09:25 -0600 Received: from DBDE70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id qBA79NIq004471; Mon, 10 Dec 2012 12:39:23 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by dbde70.ent.ti.com (172.24.170.148) with Microsoft SMTP Server id 14.1.323.3; Mon, 10 Dec 2012 12:39:23 +0530 Received: from a0131933lt.apr.dhcp.ti.com (smtpvbd.itg.ti.com [172.24.170.250]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with ESMTP id qBA79KlJ030499; Mon, 10 Dec 2012 12:39:23 +0530 From: Lokesh Vutla To: CC: , , , , Subject: [PATCH 1/9] memory: emif: Correct the lpmode timeout calculation Date: Mon, 10 Dec 2012 12:39:10 +0530 Message-ID: <1355123358-5273-2-git-send-email-lokeshvutla@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1355123358-5273-1-git-send-email-lokeshvutla@ti.com> References: <1355123358-5273-1-git-send-email-lokeshvutla@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org The driver tries to round up the specified timeout cycles to next power of 2 value. But this is done wrongly. Correcting this here. Signed-off-by: Lokesh Vutla --- drivers/memory/emif.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/memory/emif.c b/drivers/memory/emif.c index 06d31c9..8589aba 100644 --- a/drivers/memory/emif.c +++ b/drivers/memory/emif.c @@ -731,9 +731,9 @@ static u32 get_pwr_mgmt_ctrl(u32 freq, struct emif_data *emif, u32 ip_rev) if (timeout < 16) { timeout = 0; } else { - timeout = __fls(timeout) - 3; if (timeout & (timeout - 1)) - timeout++; + timeout <<= 1; + timeout = __fls(timeout) - 3; } switch (lpmode) {