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=-5.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 A9257C47E49 for ; Fri, 25 Oct 2019 15:18:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8168D21D7B for ; Fri, 25 Oct 2019 15:18:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2440609AbfJYPSy (ORCPT ); Fri, 25 Oct 2019 11:18:54 -0400 Received: from helcar.hmeau.com ([216.24.177.18]:35694 "EHLO deadmen.hmeau.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2439061AbfJYPSy (ORCPT ); Fri, 25 Oct 2019 11:18:54 -0400 Received: from gondobar.mordor.me.apana.org.au ([192.168.128.4] helo=gondobar) by deadmen.hmeau.com with esmtps (Exim 4.89 #2 (Debian)) id 1iO1MN-0001dK-0d; Fri, 25 Oct 2019 23:18:39 +0800 Received: from herbert by gondobar with local (Exim 4.89) (envelope-from ) id 1iO1MC-0007iE-KM; Fri, 25 Oct 2019 23:18:28 +0800 Date: Fri, 25 Oct 2019 23:18:28 +0800 From: Herbert Xu To: Sumit Garg Cc: linux-crypto@vger.kernel.org, dsaxena@plexity.net, mpm@selenic.com, romain.perier@free-electrons.com, arnd@arndb.de, gregkh@linuxfoundation.org, daniel.thompson@linaro.org, ralph.siemsen@linaro.org, milan.stevanovic@se.com, ryan.harkin@linaro.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] hwrng: omap - Fix RNG wait loop timeout Message-ID: <20191025151828.l4gdnuw3ud5gkfw2@gondor.apana.org.au> References: <1571054565-6991-1-git-send-email-sumit.garg@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1571054565-6991-1-git-send-email-sumit.garg@linaro.org> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Oct 14, 2019 at 05:32:45PM +0530, Sumit Garg wrote: > Existing RNG data read timeout is 200us but it doesn't cover EIP76 RNG > data rate which takes approx. 700us to produce 16 bytes of output data > as per testing results. So configure the timeout as 1000us to also take > account of lack of udelay()'s reliability. > > Fixes: 383212425c92 ("hwrng: omap - Add device variant for SafeXcel IP-76 found in Armada 8K") > Cc: > Signed-off-by: Sumit Garg > --- > drivers/char/hw_random/omap-rng.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) Patch applied. Thanks. -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt