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From: "Łukasz Stelmach" <l.stelmach@samsung.com>
To: Kukjin Kim <kgene@kernel.org>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Tomasz Figa <tomasz.figa@gmail.com>,
	Andi Shyti <andi@etezian.org>, Mark Brown <broonie@kernel.org>,
	linux-spi@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Cc: m.szyprowski@samsung.com, b.zolnierkie@samsung.com,
	"Łukasz Stelmach" <l.stelmach@samsung.com>
Subject: [PATCH v2 RESEND 4/9] spi: spi-s3c64xx: Report more information when errors occur
Date: Thu,  1 Oct 2020 17:21:43 +0200	[thread overview]
Message-ID: <20201001152148.29747-5-l.stelmach@samsung.com> (raw)
In-Reply-To: <20201001152148.29747-1-l.stelmach@samsung.com>

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 <krzk@kernel.org>
Signed-off-by: Łukasz Stelmach <l.stelmach@samsung.com>
---
 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 f7482f2f1e13..5be6f2484e86 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);
-- 
2.26.2


  parent reply	other threads:[~2020-10-01 15:23 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20200821161404eucas1p20577160d1bff2e8f5cae7403e93716ab@eucas1p2.samsung.com>
2020-08-21 16:13 ` [PATCH v2 0/9] Some fixes for spi-s3c64xx Łukasz Stelmach
     [not found]   ` <CGME20200821161405eucas1p1d43a5970c6a26389cd506aab5f986bc8@eucas1p1.samsung.com>
2020-08-21 16:13     ` [PATCH v2 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Łukasz Stelmach
2020-08-22 12:01       ` Krzysztof Kozlowski
     [not found]   ` <CGME20200821161405eucas1p20aad659cd41bc4f56d5123d3c63394f0@eucas1p2.samsung.com>
2020-08-21 16:13     ` [PATCH v2 2/9] spi: spi-s3s64xx: Add S3C64XX_SPI_QUIRK_CS_AUTO for Exynos3250 Łukasz Stelmach
2020-08-22 12:02       ` Krzysztof Kozlowski
     [not found]   ` <CGME20200821161405eucas1p19280babcd73926b5c22a48830f5fecd7@eucas1p1.samsung.com>
2020-08-21 16:13     ` [PATCH v2 3/9] spi: spi-s3c64xx: Report more information when errors occur Łukasz Stelmach
2020-08-22 12:03       ` Krzysztof Kozlowski
     [not found]   ` <CGME20200821161406eucas1p2be3221183a855afd0213f8ce58bd8942@eucas1p2.samsung.com>
2020-08-21 16:13     ` [PATCH v2 4/9] spi: spi-s3c64xx: Rename S3C64XX_SPI_SLAVE_* to S3C64XX_SPI_CS_* Łukasz Stelmach
     [not found]   ` <CGME20200821161406eucas1p121553719d4e9cc020d2c557a69000f0c@eucas1p1.samsung.com>
2020-08-21 16:13     ` [PATCH v2 5/9] spi: spi-s3c64xx: Fix doc comment for struct s3c64xx_spi_driver_data Łukasz Stelmach
2020-08-22 12:26       ` Krzysztof Kozlowski
     [not found]   ` <CGME20200821161407eucas1p116af63a668bdbb75fa974589e5f6139f@eucas1p1.samsung.com>
2020-08-21 16:13     ` [PATCH v2 6/9] spi: spi-s3c64xx: Check return values Łukasz Stelmach
2020-08-22 12:37       ` Krzysztof Kozlowski
2020-08-25 19:06       ` Sylwester Nawrocki
     [not found]         ` <CGME20200901152113eucas1p2977046b7a5b4c5a519f88870d658698a@eucas1p2.samsung.com>
2020-09-01 15:21           ` Lukasz Stelmach
2020-09-02  8:14             ` Sylwester Nawrocki
     [not found]               ` <CGME20200903084555eucas1p2f40375edb325107b68966fd52198b220@eucas1p2.samsung.com>
2020-09-03  8:45                 ` Lukasz Stelmach
2020-09-03 11:18                   ` Sylwester Nawrocki
     [not found]   ` <CGME20200821161407eucas1p249e4833b8839f717cc2a496ab43bb8a2@eucas1p2.samsung.com>
2020-08-21 16:13     ` [PATCH v2 7/9] spi: spi-s3c64xx: Ensure cur_speed holds actual clock value Łukasz Stelmach
2020-08-22 12:43       ` Krzysztof Kozlowski
2020-08-22 14:52         ` Tomasz Figa
2020-08-22 15:18           ` Krzysztof Kozlowski
2020-08-22 15:20             ` Tomasz Figa
     [not found]         ` <CGME20200824131716eucas1p16a3fde52aa765e7cd6584d4733762047@eucas1p1.samsung.com>
2020-08-24 13:17           ` Lukasz Stelmach
2020-08-24 13:21             ` Tomasz Figa
     [not found]               ` <CGME20200825090211eucas1p1b63191fa778a775e33169ba2c1d3b74b@eucas1p1.samsung.com>
2020-08-25  9:01                 ` Lukasz Stelmach
2020-08-25 15:11                   ` Tomasz Figa
     [not found]                     ` <CGME20200825154611eucas1p284be8779ab484e675af071afef28376b@eucas1p2.samsung.com>
2020-08-25 15:45                       ` Lukasz Stelmach
2020-08-22 14:54       ` Tomasz Figa
     [not found]   ` <CGME20200821161407eucas1p23a283ac117d4381e087e9bacec537665@eucas1p2.samsung.com>
2020-08-21 16:14     ` [PATCH v2 8/9] spi: spi-s3c64xx: Increase transfer timeout Łukasz Stelmach
2020-08-22 12:43       ` Krzysztof Kozlowski
     [not found]   ` <CGME20200821161408eucas1p196aa4b954b3d19ad1b89a48dbbe41fbc@eucas1p1.samsung.com>
2020-08-21 16:14     ` [PATCH v2 9/9] spi: spi-s3c64xx: Turn on interrupts upon resume Łukasz Stelmach
2020-08-22 12:44       ` Krzysztof Kozlowski
     [not found]   ` <CGME20201001152246eucas1p1ee289b8a85b707f7496355c081623796@eucas1p1.samsung.com>
2020-10-01 15:21     ` [PATCH v2 RESEND 0/9] Some fixes for spi-s3c64xx Łukasz Stelmach
     [not found]       ` <CGME20201001152246eucas1p1b4155ab4f06a39cc88f205b4a7cd47f9@eucas1p1.samsung.com>
2020-10-01 15:21         ` [PATCH v2 RESEND 1/9] spi: spi-s3c64xx: swap s3c64xx_spi_set_cs() and s3c64xx_enable_datapath() Łukasz Stelmach
     [not found]       ` <CGME20201001152246eucas1p2fb22ab55c276d76c4508142842c90ab8@eucas1p2.samsung.com>
2020-10-01 15:21         ` [PATCH v2 RESEND 2/9] spi: spi-s3s64xx: Add S3C64XX_SPI_QUIRK_CS_AUTO for Exynos3250 Łukasz Stelmach
2020-10-01 19:04           ` Krzysztof Kozlowski
     [not found]             ` <CGME20201002101408eucas1p121c21cde5e644992078978d9bf1c5194@eucas1p1.samsung.com>
2020-10-02 10:13               ` Lukasz Stelmach
     [not found]       ` <CGME20201001152247eucas1p2b6b1cc61b9b175b0a621609cd58effbd@eucas1p2.samsung.com>
2020-10-01 15:21         ` [PATCH v2 RESEND 3/9] spi: spi-s3c64xx: Check return values Łukasz Stelmach
     [not found]       ` <CGME20201001152247eucas1p2afff5b5b73f78d7c5111ac1c800e718a@eucas1p2.samsung.com>
2020-10-01 15:21         ` Łukasz Stelmach [this message]
     [not found]       ` <CGME20201001152248eucas1p10219600aaa0df6e030d2493b2aefbe92@eucas1p1.samsung.com>
2020-10-01 15:21         ` [PATCH v2 RESEND 5/9] spi: spi-s3c64xx: Rename S3C64XX_SPI_SLAVE_* to S3C64XX_SPI_CS_* Łukasz Stelmach
     [not found]       ` <CGME20201001152248eucas1p12f71c21a5873b6360e4b38efebb50271@eucas1p1.samsung.com>
2020-10-01 15:21         ` [PATCH v2 RESEND 6/9] spi: spi-s3c64xx: Fix doc comment for struct s3c64xx_spi_driver_data Łukasz Stelmach
     [not found]       ` <CGME20201001152248eucas1p132a63f588f62d902879322ebadd67173@eucas1p1.samsung.com>
2020-10-01 15:21         ` [PATCH v2 RESEND 7/9] spi: spi-s3c64xx: Ensure cur_speed holds actual clock value Łukasz Stelmach
2020-10-01 19:12           ` Krzysztof Kozlowski
     [not found]       ` <CGME20201001152249eucas1p1c3bbe7b2a677affe4e1a1e4d469f94c8@eucas1p1.samsung.com>
2020-10-01 15:21         ` [PATCH v2 RESEND 8/9] spi: spi-s3c64xx: Increase transfer timeout Łukasz Stelmach
     [not found]       ` <CGME20201001152249eucas1p165b78adf542a48b38b49cb5e00500e26@eucas1p1.samsung.com>
2020-10-01 15:21         ` [PATCH v2 RESEND 9/9] spi: spi-s3c64xx: Turn on interrupts upon resume Łukasz Stelmach
2020-10-01 16:13       ` [PATCH v2 RESEND 0/9] Some fixes for spi-s3c64xx Mark Brown
     [not found]         ` <CGME20201001182315eucas1p1b1fc9d5d0ea91db6e56e92d5cf2583e5@eucas1p1.samsung.com>
2020-10-01 18:23           ` Lukasz Stelmach
2020-10-01 19:02             ` Krzysztof Kozlowski
2020-10-01 19:43               ` Mark Brown
2020-10-02  6:18                 ` Krzysztof Kozlowski

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