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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DC1F0C04A6A for ; Tue, 25 Jul 2023 11:06:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233774AbjGYLGg (ORCPT ); Tue, 25 Jul 2023 07:06:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233965AbjGYLGW (ORCPT ); Tue, 25 Jul 2023 07:06:22 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DFC9444B6 for ; Tue, 25 Jul 2023 04:04:35 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 705C76166E for ; Tue, 25 Jul 2023 11:04:35 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7DC45C433CA; Tue, 25 Jul 2023 11:04:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690283074; bh=8CNmmWFc9LAc7GEzGBxZ9Z/vYxAP72k3i3uL3QYfgnY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2GNSaLOYdAafsTGdM4lUuqsMv0RKJXsgrJvneYbvuZ66nTqD2LCf8/lrV5ZqQbenw HrqiJ4OSAPc3QATKNP7YpGpZ/Wnm8l07sICobsrBgjxSQnsLrNCcbXV+HWWesxdHfK scYRmI5v6ncHJVzL77qP37qHqfOfVxI59mbXG7Lk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jaewon Kim , Chanho Park , Mark Brown , Sasha Levin Subject: [PATCH 6.1 100/183] spi: s3c64xx: clear loopback bit after loopback test Date: Tue, 25 Jul 2023 12:45:28 +0200 Message-ID: <20230725104511.556694987@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104507.756981058@linuxfoundation.org> References: <20230725104507.756981058@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jaewon Kim [ Upstream commit 9ec3c5517e22a12d2ff1b71e844f7913641460c6 ] When SPI loopback transfer is performed, S3C64XX_SPI_MODE_SELF_LOOPBACK bit still remained. It works as loopback even if the next transfer is not spi loopback mode. If not SPI_LOOP, needs to clear S3C64XX_SPI_MODE_SELF_LOOPBACK bit. Signed-off-by: Jaewon Kim Fixes: ffb7bcd3b27e ("spi: s3c64xx: support loopback mode") Reviewed-by: Chanho Park Link: https://lore.kernel.org/r/20230711082020.138165-1-jaewon02.kim@samsung.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-s3c64xx.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 71d324ec9a70a..1480df7b43b3f 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -668,6 +668,8 @@ static int s3c64xx_spi_config(struct s3c64xx_spi_driver_data *sdd) if ((sdd->cur_mode & SPI_LOOP) && sdd->port_conf->has_loopback) val |= S3C64XX_SPI_MODE_SELF_LOOPBACK; + else + val &= ~S3C64XX_SPI_MODE_SELF_LOOPBACK; writel(val, regs + S3C64XX_SPI_MODE_CFG); -- 2.39.2