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Wed, 19 Aug 2020 12:32:27 +0000 (GMT) From: =?utf-8?q?=C5=81ukasz_Stelmach?= To: Kukjin Kim , Krzysztof Kozlowski , 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: m.szyprowski@samsung.com, b.zolnierkie@samsung.com, =?utf-8?q?=C5=81ukas?= =?utf-8?q?z_Stelmach?= Subject: [PATCH 6/8] spi: spi-s3c64xx: Check return values Date: Wed, 19 Aug 2020 14:32:06 +0200 Message-Id: <20200819123208.12337-7-l.stelmach@samsung.com> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200819123208.12337-1-l.stelmach@samsung.com> MIME-Version: 1.0 Organization: Samsung R&D Institute Poland X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrIKsWRmVeSWpSXmKPExsWy7djP87p3pG3jDZ7fELZY/OM5k8XGGetZ LaY+fMJm0f/4NbPF+fMb2C1uHlrBaLHp8TVWi8u75rBZzDi/j8mi8eNNdou1R+6yO3B7XF/y idlj06pONo/NS+o9+rasYvT4vEkugDWKyyYlNSezLLVI3y6BK6N/8gKWgpucFf/W/GVsYGzg 6GLk5JAQMJGYt/wNUxcjF4eQwApGiTmLdzNCOF8YJV5vn88C4XxmlFh5ZDkLTMvsri1QieWM Er0nZkE5zxklfu1/xAZSxSbgKNG/9AQrSEJEYAKTxMNzb8ASzAKlEj07D4HZwgJWEqtmHwUb yyKgKvG0r5ERxOYVsJY4sWEiE8Q6eYn25dvB6jkFbCQe/prCBlEjKHFy5hOwXn4BLYk1TddZ IObLSzRvnc0MslhC4By7xPsJ54CGcgA5LhKnLwlCzBSWeHV8CzuELSPxf+d8JoiSeonJk8wg WnsYJbbN+QH1srXEnXO/2EBqmAU0Jdbv0ocIO0ps/LoUqpVP4sZbQYgL+CQmbZvODBHmleho E4KoVpFY178HaqCURO+rFYwTGJVmIfllFpL7ZyHsWsDIvIpRPLW0ODc9tdgwL7Vcrzgxt7g0 L10vOT93EyMwIZ3+d/zTDsavl5IOMQpwMCrx8Facs44XYk0sK67MPcQowcGsJMLrdPZ0nBBv SmJlVWpRfnxRaU5q8SFGaQ4WJXFe40UvY4UE0hNLUrNTUwtSi2CyTBycUg2Mm/63/1wkWeYZ kBg4Qbqm0nWZtu6P+Ocb1mdtPXV8EcO8pfd+GWW0RD+Zpv7ib9/F7hctFZEcB9cszDhUJlMo NkP1ifC1Nd9yNN5bGKbV2r+VdE5fbHBg77pJYVLex2I1fQSq1+d9eujWuPD75F8cv/a+3/Rq tu300qo7rwPdP966uee85EQ5cSWW4oxEQy3mouJEAIyZrshEAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrIIsWRmVeSWpSXmKPExsVy+t/xe7q3pW3jDXoumlks/vGcyWLjjPWs FlMfPmGz6H/8mtni/PkN7BY3D61gtNj0+BqrxeVdc9gsZpzfx2TR+PEmu8XaI3fZHbg9ri/5 xOyxaVUnm8fmJfUefVtWMXp83iQXwBqlZ1OUX1qSqpCRX1xiqxRtaGGkZ2hpoWdkYqlnaGwe a2VkqqRvZ5OSmpNZllqkb5egl9E/eQFLwU3Oin9r/jI2MDZwdDFyckgImEjM7trC0sXIxSEk sJRRouvdfSCHAyghJbFybjpEjbDEn2tdbCC2kMBTRok5SwRBbDYBR4n+pSdYQXpFBGYwSTy5 MZkVJMEsUC5xadZzdhBbWMBKYtXsoywgNouAqsTTvkZGEJtXwFrixIaJTBAL5CXal28HW8Ap YCPx8NcUqGXWEl2LFzJB1AtKnJz5BOw2ZgF1ifXzhEDC/AJaEmuarrNArJWXaN46m3kCo9As JB2zEDpmIalawMi8ilEktbQ4Nz232FCvODG3uDQvXS85P3cTIzD6th37uXkH46WNwYcYBTgY lXh4K85ZxwuxJpYVV+YeYpTgYFYS4XU6ezpOiDclsbIqtSg/vqg0J7X4EKMp0JsTmaVEk/OB iSGvJN7Q1NDcwtLQ3Njc2MxCSZy3Q+BgjJBAemJJanZqakFqEUwfEwenFDBWJknrZdtM7N+x f8vnx2ZfX6Qo/uyTq7n4ajf3t1r/iMAHeWc0l4nEqd46t8Lu/u/ZGtn3uTzPnPG7Nmd2TG/M niX/ZHYY1KWaKKuo36jcebXiYn+a+I+AlztPr93qzcASYSp+8Y79+pPak53jnp//zXz5Tud+ 4z3pevH+Zv+XyOeW3Lx6JVJUiaU4I9FQi7moOBEA3rAYbtQCAAA= X-CMS-MailID: 20200819123227eucas1p11ec027714c16d5a66c89c6ef1f7b3604 X-Msg-Generator: CA X-RootMTR: 20200819123227eucas1p11ec027714c16d5a66c89c6ef1f7b3604 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20200819123227eucas1p11ec027714c16d5a66c89c6ef1f7b3604 References: <20200819123208.12337-1-l.stelmach@samsung.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Signed-off-by: Łukasz Stelmach --- drivers/spi/spi-s3c64xx.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 505789f91fdf..27d77600a820 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -273,6 +273,7 @@ static void prepare_dma(struct s3c64xx_spi_dma_data *dma, struct s3c64xx_spi_driver_data *sdd; struct dma_slave_config config; struct dma_async_tx_descriptor *desc; + int ret; memset(&config, 0, sizeof(config)); @@ -296,11 +297,22 @@ static void prepare_dma(struct s3c64xx_spi_dma_data *dma, desc = dmaengine_prep_slave_sg(dma->ch, sgt->sgl, sgt->nents, dma->direction, DMA_PREP_INTERRUPT); + if (!desc) { + dev_err(&sdd->pdev->dev, "unable to prepare %s scatterlist", + dma->direction == DMA_DEV_TO_MEM ? "rx" : "tx"); + return; + } desc->callback = s3c64xx_spi_dmacb; desc->callback_param = dma; dma->cookie = dmaengine_submit(desc); + ret = dma_submit_error(dma->cookie); + if (ret) { + dev_err(&sdd->pdev->dev, "dmaengine_submit() failed %d", ret); + return; + } + dma_async_issue_pending(dma->ch); }