Received: by 2002:a05:6a10:f3d0:0:0:0:0 with SMTP id a16csp5351423pxv; Wed, 7 Jul 2021 01:28:47 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzsmYboHfmI1BKxDRhnIvrwbROSbIpaT40pyzW/s5kzveiTCt0tvvPU8XPMdwrr338ho+Xe X-Received: by 2002:a6b:7905:: with SMTP id i5mr19137405iop.175.1625646527569; Wed, 07 Jul 2021 01:28:47 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1625646527; cv=none; d=google.com; s=arc-20160816; b=SrTc+2FCQVDepQ+ktFzyUg6En4mWtPSWqr+oEKNDtBizuqDzKJkfe5XXdOI+gTswxE U5EL+w27MZOvuKzK1meQXpsfd8tTMOPk54C2tJKIX75daMLqIrjPwxqz/pmtaGKdvaJ7 6GYYw2OYFfesP5tdM9UYYmN41fyhf4S6oTJwXckxCBs1tiseOLAScSzQhdD+jVyuxw69 vdaucjQcNw6f61LgDjSTPfkby2OtRPHKJ2AchTidchaKWyjVeFlSC1iKZisvjxHUC9jE GqsoxZM1mTKdll15/jhZIcNlftYFaey4XZancIM7CUZPUcBpxMY0RkX1Ff0xRpSG2xCd z3Sw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:references:in-reply-to:message-id :date:subject:cc:to:from:dkim-signature; bh=uTl+uyZFsI1SfNjyqEV2zl99tFDW1bfBw2aH9jeYOAY=; b=t1K0vlmMeoEV8ViSV07Ay+fNoyzOKFWTcbA+woeCdKbaLb3nNR3JGITp3l2VczLin8 RpmCNaGRDLrIuLQkTTHh0mkQW90DgH93p+kgWO9ZRr/vbgn1bAa5xV/b1ZnyQPzIIJoF MNLWabcoyNfZnG8NQdLxGCRflw+08qzCZWKoyjaHdnaAf9WPVWS8ltUBa2bMbydwDIr5 +4/GD2yCykwtdBcFdU3zuW2YZvUSVvcwOadILL6TEKQnxgxxjGegyR3kHlXI+vZ6HVkR CR5RSHIxgQA1YS37ATjG3aLLlYTSyOAik08mwgw0E5DHdl28VLeSjydwgx5G12PBhFrm q1vg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@foss.st.com header.s=selector1 header.b=CrbjUwmi; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=foss.st.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id d14si8774624iow.80.2021.07.07.01.28.36; Wed, 07 Jul 2021 01:28:47 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@foss.st.com header.s=selector1 header.b=CrbjUwmi; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=foss.st.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231172AbhGGIak (ORCPT + 99 others); Wed, 7 Jul 2021 04:30:40 -0400 Received: from mx07-00178001.pphosted.com ([185.132.182.106]:5432 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230480AbhGGIaf (ORCPT ); Wed, 7 Jul 2021 04:30:35 -0400 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 1678RZkK008701; Wed, 7 Jul 2021 10:27:42 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=selector1; bh=uTl+uyZFsI1SfNjyqEV2zl99tFDW1bfBw2aH9jeYOAY=; b=CrbjUwmigarD63M3/1EGypbn7tQjPrvPaV/KGxUL1E5etBrjIAZsHk/t4J7uaSSrPcld pEjnhx39LjCL9YYgz8bsywDhZKt5NR/ef+4g7UREgGp4im1TWYubNJbAJ1Q8uJSmEJ6n LkSdeDdcsYGeKXLoZmAV95v9EbuSZZ1q8dij8exbqnjhTDLqXgxUhfp7BEEJNVbSH9rW VMPaz5nRgoTxSaFw22lISBKicThd/voHju8/ElIc2QU7xv1IoaJSISEbFeDbpTqaBqOk iuBqdtYnQUNSIxCGV9Khh5hWjr79+KNWoYdKDdeBjhWKNCD1Nhxc2L87NGs2MSMtjWRZ kg== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 39muqtu2xt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Jul 2021 10:27:42 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 71D85100034; Wed, 7 Jul 2021 10:27:42 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 65E6F215125; Wed, 7 Jul 2021 10:27:42 +0200 (CEST) Received: from localhost (10.75.127.49) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 7 Jul 2021 10:27:41 +0200 From: Alain Volmat To: , CC: , , , , , , , Subject: [PATCH v2 4/7] spi: stm32: Revert "properly handle 0 byte transfer" Date: Wed, 7 Jul 2021 10:27:03 +0200 Message-ID: <1625646426-5826-5-git-send-email-alain.volmat@foss.st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1625646426-5826-1-git-send-email-alain.volmat@foss.st.com> References: <1625646426-5826-1-git-send-email-alain.volmat@foss.st.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.75.127.49] X-ClientProxiedBy: SFHDAG2NODE1.st.com (10.75.127.4) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.790 definitions=2021-07-07_05:2021-07-06,2021-07-07 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 0 byte transfer handling is now done within the core in code added by commit b306320322c9 ("spi: Skip zero-length transfers in spi_transfer_one_message()") This reverts commit 2269f5a8b1a7 ("spi: stm32: properly handle 0 byte transfer") Signed-off-by: Alain Volmat --- drivers/spi/spi-stm32.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c index 4dbd5cbe0c11..d37bfead4d8c 100644 --- a/drivers/spi/spi-stm32.c +++ b/drivers/spi/spi-stm32.c @@ -1647,10 +1647,6 @@ static int stm32_spi_transfer_one(struct spi_master *master, struct stm32_spi *spi = spi_master_get_devdata(master); int ret; - /* Don't do anything on 0 bytes transfers */ - if (transfer->len == 0) - return 0; - spi->tx_buf = transfer->tx_buf; spi->rx_buf = transfer->rx_buf; spi->tx_len = spi->tx_buf ? transfer->len : 0; -- 2.25.1