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Date: Tue, 19 May 2020 19:56:25 +0530 From: Pratyush Yadav <p.yadav@...com> To: Tudor Ambarus <tudor.ambarus@...rochip.com>, Miquel Raynal <miquel.raynal@...tlin.com>, Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>, Mark Brown <broonie@...nel.org>, Nicolas Ferre <nicolas.ferre@...rochip.com>, Alexandre Belloni <alexandre.belloni@...tlin.com>, Ludovic Desroches <ludovic.desroches@...rochip.com>, Matthias Brugger <matthias.bgg@...il.com>, <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, <linux-spi@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-mediatek@...ts.infradead.org> CC: Pratyush Yadav <p.yadav@...com>, Sekhar Nori <nsekhar@...com>, Boris Brezillon <boris.brezillon@...labora.com>, Mason Yang <masonccyang@...c.com.tw> Subject: [PATCH v5 03/19] spi: spi-mtk-nor: reject DTR ops Double Transfer Rate (DTR) ops are added in spi-mem. But this controller doesn't support DTR transactions. Since we don't use the default supports_op(), which rejects all DTR ops, do that explicitly in our supports_op(). Signed-off-by: Pratyush Yadav <p.yadav@...com> --- drivers/spi/spi-mtk-nor.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/spi/spi-mtk-nor.c b/drivers/spi/spi-mtk-nor.c index 7bc302b50396..7015dccedf00 100644 --- a/drivers/spi/spi-mtk-nor.c +++ b/drivers/spi/spi-mtk-nor.c @@ -211,6 +211,10 @@ static bool mtk_nor_supports_op(struct spi_mem *mem, if (op->cmd.buswidth != 1) return false; + /* DTR ops not supported. */ + if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr) + return false; + if ((op->addr.nbytes == 3) || (op->addr.nbytes == 4)) { if ((op->data.dir == SPI_MEM_DATA_IN) && mtk_nor_match_read(op)) return true; -- 2.26.2
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