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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0AB1EC6FA92 for ; Tue, 27 Sep 2022 11:23:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=PRPFDgcMya8DUXv7Bo8dxs3793ejnaf/4YvjaAHdB8g=; b=J8mcImPUCXBU8A /lcO5IdEORWZvxKA1PQWjdM8ltT4ejPaWNVpQBB+utsERfdvLFpSSg5D9ZDss3GX+aCnUNrlOEK5u i+ZJHAkXTLVNgBaSuRCG8IpAKGvUSzpEIxSg3G7//Io5j6DrXwON6wJBhgTVrxCw7h8aTf7m9dMeo kQQcPjzSDm002ELbm1d5xxoEcxmjh17HUA0k+hByt2V3hlEBCKU8BWiWwc1upwVPv2vlKfBpbT68i 30kJ6CZB70Fv4x/iIQRd7DN8hwzbDRXSw18itD5NmZx3ca0XEAdSyOficUp315+fg2qPzIHk8794d m0TWeB5+anKaR9G8s8oA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1od8fg-00ABl5-GA; Tue, 27 Sep 2022 11:22:40 +0000 Received: from smtp1.axis.com ([195.60.68.17]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1od8eT-00AAtl-Tw for linux-arm-kernel@lists.infradead.org; Tue, 27 Sep 2022 11:21:28 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=axis.com; q=dns/txt; s=axis-central1; t=1664277685; x=1695813685; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=hzApWBA3xTSZ1v8riDwMfzZx6pC2MkanA6btQmoyo+8=; b=FziA2sQvrRC6cswPWb550AUV0rmEji95BDK2Q3ZXSL5fl2CvCD95WiPM bIukq2Z+lPitNcrd3pTvTLoV9Dlj14Ms8wAp0Qc9qqAe3KT83Q22lv2GP 5sAK58bYxTPe8jLWYQP6/v2byZ1wPGSKwOxqECF5asqSRFsYOg7okuXit yLkPNq8up8+VzMMkglCKrdTFspbJa0K+pOXmYy2eaNseBqpjsL0nDyUYA /cAMarYajFO6fuGO1hi3lfCmFnBg/ttPsF866i3Kg4NujPPYXB37jMjwF EfbQBNc/UQFGdvL73ZeUeuK08U2HMVsB76iNcXw2soBlQJztXEVl1ORWb w==; 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220927_042126_387446_13AA6814 X-CRM114-Status: UNSURE ( 9.29 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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) { -- 2.34.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel