From patchwork Thu Aug 24 19:20:53 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Martin Kaiser X-Patchwork-Id: 13364582 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id ECBA0C83003 for ; Thu, 24 Aug 2023 19:24:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243175AbjHXTYJ (ORCPT ); Thu, 24 Aug 2023 15:24:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52986 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243022AbjHXTXv (ORCPT ); Thu, 24 Aug 2023 15:23:51 -0400 Received: from viti.kaiser.cx (viti.kaiser.cx [IPv6:2a01:238:43fe:e600:cd0c:bd4a:7a3:8e9f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF9EC1BE6; Thu, 24 Aug 2023 12:23:48 -0700 (PDT) Received: from dslb-188-097-211-187.188.097.pools.vodafone-ip.de ([188.97.211.187] helo=martin-debian-2.paytec.ch) by viti.kaiser.cx with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1qZFvg-00036P-Ny; Thu, 24 Aug 2023 21:23:40 +0200 From: Martin Kaiser To: Herbert Xu Cc: Alexander Stein , linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Martin Kaiser Subject: [PATCH v2 0/6] hwrng: imx-rngc - use polling instead of interrupt Date: Thu, 24 Aug 2023 21:20:53 +0200 Message-Id: <20230824192059.1569591-1-martin@kaiser.cx> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org Use polling and wait actively for the self test and the initial seeding of the rngc to complete. This is much simpler than using an interrupt and a completion. v2: - set reasonable timeouts - separate commit for the removal of interrupt handling - readl_poll_timeout does not wait in the foreground Martin Kaiser (6): hwrng: imx-rngc - reasonable timeout for selftest hwrng: imx-rngc - reasonable timeout for initial seed hwrng: imx-rngc - use polling to detect end of self test hwrng: imx-rngc - read status register for error checks hwrng: imx-rngc - use polling for initial seed hwrng: imx-rngc - remove interrupt handler drivers/char/hw_random/imx-rngc.c | 100 ++++++------------------------ 1 file changed, 18 insertions(+), 82 deletions(-)