From patchwork Tue Sep 27 11:21:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vincent Whitchurch X-Patchwork-Id: 12990462 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 AB2E3C6FA92 for ; Tue, 27 Sep 2022 11:23:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230169AbiI0LXw (ORCPT ); Tue, 27 Sep 2022 07:23:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232035AbiI0LXM (ORCPT ); Tue, 27 Sep 2022 07:23:12 -0400 Received: from smtp1.axis.com (smtp1.axis.com [195.60.68.17]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A8EF412DEEC; Tue, 27 Sep 2022 04:21:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axis.com; q=dns/txt; s=axis-central1; t=1664277718; x=1695813718; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=hzApWBA3xTSZ1v8riDwMfzZx6pC2MkanA6btQmoyo+8=; b=dOMu+tMOOmvqqaVKoHdkBirhl/BpFE/xTb0qx9wJ3kItP7ZiHMMDZ7uN C5d9Aqv/BGne+2rvmUTLNRLWPANDWah/YxDRUCsKg6vDzDFKyqA6tyNyp pQzubNezNmCE9GD5hjEPyeb83LZP4+KoGDGHkORoeequpO/5jegPSyNZX l8NwT3szcVAUYQS4wY1SRT62dycXSTMTXXwilfmxtvpFyOgLtz5suKJtk r7XLEKuPxMZQf+436+UjLqxpcP/79o2leQnhOa+cOpnFbnnNScObypfrg AHgUw72RwVTSDrQFvLxlrTbyrL+UpBeTnMvso+O8k37LREDsA2Tug7+FZ A==; From: Vincent Whitchurch To: , , CC: , Vincent Whitchurch , , , , , Subject: [PATCH v2 3/4] spi: Split transfers larger than max size Date: Tue, 27 Sep 2022 13:21:16 +0200 Message-ID: <20220927112117.77599-4-vincent.whitchurch@axis.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220927112117.77599-1-vincent.whitchurch@axis.com> References: <20220927112117.77599-1-vincent.whitchurch@axis.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org A couple of drivers call spi_split_transfers_maxsize() from their ->prepare_message() callbacks to split transfers which are too big for them to handle. Add support in the core to do this based on ->max_transfer_size() to avoid code duplication. Signed-off-by: Vincent Whitchurch --- drivers/spi/spi.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index f41a8c2752b8..44e4352d948b 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1649,6 +1649,15 @@ static int __spi_pump_transfer_message(struct spi_controller *ctlr, trace_spi_message_start(msg); + ret = spi_split_transfers_maxsize(ctlr, msg, + spi_max_transfer_size(msg->spi), + GFP_KERNEL | GFP_DMA); + if (ret) { + msg->status = ret; + spi_finalize_current_message(ctlr); + return ret; + } + if (ctlr->prepare_message) { ret = ctlr->prepare_message(ctlr, msg); if (ret) {