From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E495B8F5B for ; Sun, 16 Jul 2023 20:25:19 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 69B42C433C8; Sun, 16 Jul 2023 20:25:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1689539119; bh=uMQ8yDtOinReme1j9OS//mJ3N23L5KBZrMXQ31n0oLY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xV16t6H0EhoI1oW+LeGc2iQXRDHkDRSiKeJ1Kx/7Jljcu7EIgc6u5SaQNGeGGielq m52BRbqA2U0aqVzdGAPV8fXmtirNp27KerKjvhSBmPyO1cDXm/jpCFMgR4jEKSh9mH eUXGvYJ99/iO7Pk2cZXgD0gaeS8eoV7MXQWDnrkc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Dmitry Baryshkov , Mark Brown , Sasha Levin Subject: [PATCH 6.4 665/800] spi: spi-geni-qcom: enable SPI_CONTROLLER_MUST_TX for GPI DMA mode Date: Sun, 16 Jul 2023 21:48:38 +0200 Message-ID: <20230716195004.558660996@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230716194949.099592437@linuxfoundation.org> References: <20230716194949.099592437@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Dmitry Baryshkov [ Upstream commit d10005837be83906bbd2078c3b4f9dfcbd6c95b6 ] The GPI DMA mode requires for TX DMA to be prepared. Force SPI core to provide TX buffer even if the caller didn't provide one by setting the SPI_CONTROLLER_MUST_TX flag. Fixes: b59c122484ec ("spi: spi-geni-qcom: Add support for GPI dma") Signed-off-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20230629095847.3648597-1-dmitry.baryshkov@linaro.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-geni-qcom.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c index 26ce959d98dfa..1df9d4844a68d 100644 --- a/drivers/spi/spi-geni-qcom.c +++ b/drivers/spi/spi-geni-qcom.c @@ -1097,6 +1097,12 @@ static int spi_geni_probe(struct platform_device *pdev) if (mas->cur_xfer_mode == GENI_SE_FIFO) spi->set_cs = spi_geni_set_cs; + /* + * TX is required per GSI spec, see setup_gsi_xfer(). + */ + if (mas->cur_xfer_mode == GENI_GPI_DMA) + spi->flags = SPI_CONTROLLER_MUST_TX; + ret = request_irq(mas->irq, geni_spi_isr, 0, dev_name(dev), spi); if (ret) goto spi_geni_release_dma; -- 2.39.2