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Fri, 2 Oct 2020 12:22:52 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , Tomasz Figa , Andi Shyti , Mark Brown , linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Marek Szyprowski , =?utf-8?q?Bart=C5=82omiej_?= =?utf-8?q?=C5=BBo=C5=82nierkiewicz?= , =?utf-8?q?=C5=81ukasz_Stelmach?= Subject: [PATCH v3 4/9] spi: spi-s3c64xx: Report more information when errors occur Date: Fri, 2 Oct 2020 14:22:38 +0200 Message-Id: <20201002122243.26849-5-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20201002122243.26849-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrFKsWRmVeSWpSXmKPExsWy7djP87pzpcvjDToWcVos/vGcyWLjjPWs FlMfPmGz6H/8mtni/PkN7BY3D61gtNj0+BqrxeVdc9gsZpzfx2TR+PEmu8XaI3fZLVbt+sPo wONxfcknZo+ds+6ye2xa1cnmsXlJvUffllWMHp83yQWwRXHZpKTmZJalFunbJXBlzL03j7ng Jm/Fg00nmRoY33J1MXJySAiYSLw9+Iyli5GLQ0hgBaPE2jUnmCCcL4wSX6Y3MoFUCQl8ZpSY cbsCpmPBmT/MEEXLGSVed/5ig3CeM0os6prOCFLFJuAo0b/0BCtIQkRgO5PExM/nwZYwCxxl lNj84CqQw8EhLBAq8XSZIIjJIqAqcfKxDkgvr4C1xK41TWwQ2+Ql2pdvB7M5BWwkTi7axgZR IyhxcuYTFhCbX0BLYk3TdTCbGai+eetssOskBB6xSzQcOscIMchFYuudy1C2sMSr41vYIWwZ if875zOB3CAhUC8xeZIZRG8Po8S2OT9YIGqsJe6cA/mSA2iBpsT6XfoQYUeJ7R/vMkO08knc eCsIcQKfxKRt06HCvBIdbUIQ1SoS6/r3QA2Ukuh9tYJxAqPSLCTPzELywCyEXQsYmVcxiqeW FuempxYb5aWW6xUn5haX5qXrJefnbmIEpqjT/45/2cG460/SIUYBDkYlHl6BA6XxQqyJZcWV uYcYJTiYlUR4nc6ejhPiTUmsrEotyo8vKs1JLT7EKM3BoiTOa7zoZayQQHpiSWp2ampBahFM lomDU6qBcQPXOuOjt/uW2PtWrU3nVBGx+ZnpyjM73WzpAW61+rd9ty1PsvjbzFq0pnnPNHWp P01TefW6T/+f8Yml+P/q7FDW1XYKIb8/Lco7/krLtt2laBKDf9aW5WyXC0ObkyX7NP+575Gq WaCwMG22aseGnoS8IhXdvps8Mc4x8ut/LJK1XvV9hn6IEktxRqKhFnNRcSIAGHIau00DAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrDIsWRmVeSWpSXmKPExsVy+t/xu7pzpMvjDb7OULZY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yW6za9YfR gcfj+pJPzB47Z91l99i0qpPNY/OSeo++LasYPT5vkgtgi9KzKcovLUlVyMgvLrFVija0MNIz tLTQMzKx1DM0No+1MjJV0rezSUnNySxLLdK3S9DLmHtvHnPBTd6KB5tOMjUwvuXqYuTkkBAw kVhw5g9zFyMXh5DAUkaJfb/OsXYxcgAlpCRWzk2HqBGW+HOtiw2i5imjxMOHV9hAEmwCjhL9 S0+wgiREBPYzSVy6cJ8FxGEWOMwocXndOiaQKmGBYIml924wgUxlEVCVOPlYByTMK2AtsWtN ExvEBnmJ9uXbwWxOARuJk4u2gdlCQDWtH+eyQtQLSpyc+YQFZAyzgLrE+nlCIGF+AS2JNU3X WUBsZqAxzVtnM09gFJqFpGMWQscsJFULGJlXMYqklhbnpucWG+kVJ+YWl+al6yXn525iBMbk tmM/t+xg7HoXfIhRgINRiYdX4EBpvBBrYllxZe4hRgkOZiURXqezp+OEeFMSK6tSi/Lji0pz UosPMZoCfTmRWUo0OR+YLvJK4g1NDc0tLA3Njc2NzSyUxHk7BA7GCAmkJ5akZqemFqQWwfQx cXBKNTCyVX7T97l8v/UQ56nS0L/ndkV+/d56Ufe364fYz8cl6y8/X9W3XV+uLDV4r4Tt9Pwr x7fvEPPT2t637U7njn3lLxJ67yjF82gVzOWbN0XzX0Zdn7nlBlVjtjspLI/DHLUcm5vtHrMt jlZ15ZrJtuhLvd6eFa1Fp3886MuOFXboDbPedyzruLESS3FGoqEWc1FxIgDpESyj3wIAAA== X-CMS-MailID: 20201002122252eucas1p1496d896453d21acda6ab83ef9b7f0b8a X-Msg-Generator: CA X-RootMTR: 20201002122252eucas1p1496d896453d21acda6ab83ef9b7f0b8a X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20201002122252eucas1p1496d896453d21acda6ab83ef9b7f0b8a References: <20201002122243.26849-1-l.stelmach@samsung.com> Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Report amount of pending data when a transfer stops due to errors. Report if DMA was used to transfer data and print the status code. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Łukasz Stelmach --- drivers/spi/spi-s3c64xx.c | 19 +++++++++++++++---- 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 48afd4818558..86b6125b24a6 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -731,17 +731,28 @@ static int s3c64xx_spi_transfer_one(struct spi_master *master, if (status) { dev_err(&spi->dev, - "I/O Error: rx-%d tx-%d res:rx-%c tx-%c len-%d\n", + "I/O Error: rx-%d tx-%d rx-%c tx-%c len-%d dma-%d res-(%d)\n", xfer->rx_buf ? 1 : 0, xfer->tx_buf ? 1 : 0, (sdd->state & RXBUSY) ? 'f' : 'p', (sdd->state & TXBUSY) ? 'f' : 'p', - xfer->len); + xfer->len, use_dma ? 1 : 0, status); if (use_dma) { - if (xfer->tx_buf && (sdd->state & TXBUSY)) + struct dma_tx_state s; + + if (xfer->tx_buf && (sdd->state & TXBUSY)) { + dmaengine_pause(sdd->tx_dma.ch); + dmaengine_tx_status(sdd->tx_dma.ch, sdd->tx_dma.cookie, &s); dmaengine_terminate_all(sdd->tx_dma.ch); - if (xfer->rx_buf && (sdd->state & RXBUSY)) + dev_err(&spi->dev, "TX residue: %d\n", s.residue); + + } + if (xfer->rx_buf && (sdd->state & RXBUSY)) { + dmaengine_pause(sdd->rx_dma.ch); + dmaengine_tx_status(sdd->rx_dma.ch, sdd->rx_dma.cookie, &s); dmaengine_terminate_all(sdd->rx_dma.ch); + dev_err(&spi->dev, "RX residue: %d\n", s.residue); + } } } else { s3c64xx_flush_fifo(sdd);