Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754795AbcKUTU5 (ORCPT ); Mon, 21 Nov 2016 14:20:57 -0500 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:41266 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754579AbcKUTUz (ORCPT ); Mon, 21 Nov 2016 14:20:55 -0500 From: Mark Brown To: Sanchayan Maity Cc: Mark Brown , broonie@kernel.org, stefan@agner.ch, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org In-Reply-To: Message-Id: Date: Mon, 21 Nov 2016 19:20:45 +0000 X-SA-Exim-Connect-IP: 2001:470:1f1d:6b5::3 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Applied "spi: spi-fsl-dspi: Fix SPI transfer issue when using multiple SPI_IOC_MESSAGE" to the spi tree X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: No (on mezzanine.sirena.org.uk); Unknown failure Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2770 Lines: 77 The patch spi: spi-fsl-dspi: Fix SPI transfer issue when using multiple SPI_IOC_MESSAGE has been applied to the spi tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From 9811430465fccae17862213d07eba017c149eb9c Mon Sep 17 00:00:00 2001 From: Sanchayan Maity Date: Thu, 17 Nov 2016 17:46:48 +0530 Subject: [PATCH] spi: spi-fsl-dspi: Fix SPI transfer issue when using multiple SPI_IOC_MESSAGE Current DMA implementation had a bug where the DMA transfer would exit the loop in dspi_transfer_one_message after the completion of a single transfer. This results in a multi message transfer submitted with SPI_IOC_MESSAGE to terminate incorrectly without an error. Signed-off-by: Sanchayan Maity Reviewed-by: Stefan Agner Signed-off-by: Mark Brown --- drivers/spi/spi-fsl-dspi.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index bc64700b514d..b1ee1f521ba0 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -714,7 +714,7 @@ static int dspi_transfer_one_message(struct spi_master *master, SPI_RSER_TFFFE | SPI_RSER_TFFFD | SPI_RSER_RFDFE | SPI_RSER_RFDFD); status = dspi_dma_xfer(dspi); - goto out; + break; default: dev_err(&dspi->pdev->dev, "unsupported trans_mode %u\n", trans_mode); @@ -722,9 +722,13 @@ static int dspi_transfer_one_message(struct spi_master *master, goto out; } - if (wait_event_interruptible(dspi->waitq, dspi->waitflags)) - dev_err(&dspi->pdev->dev, "wait transfer complete fail!\n"); - dspi->waitflags = 0; + if (trans_mode != DSPI_DMA_MODE) { + if (wait_event_interruptible(dspi->waitq, + dspi->waitflags)) + dev_err(&dspi->pdev->dev, + "wait transfer complete fail!\n"); + dspi->waitflags = 0; + } if (transfer->delay_usecs) udelay(transfer->delay_usecs); -- 2.10.2