From 5c81c275582c9d9c66d2f928591a2065f2528231 Mon Sep 17 00:00:00 2001 From: Pratyush Yadav Date: Wed, 24 Jun 2020 00:00:16 +0530 Subject: [PATCH] spi: atmel-quadspi: 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 Reviewed-by: Tudor Ambarus Link: https://lore.kernel.org/r/20200623183030.26591-4-p.yadav@ti.com Signed-off-by: Mark Brown --- drivers/spi/atmel-quadspi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c index cb44d1e169aa4..a898755fb41e6 100644 --- a/drivers/spi/atmel-quadspi.c +++ b/drivers/spi/atmel-quadspi.c @@ -285,6 +285,12 @@ static bool atmel_qspi_supports_op(struct spi_mem *mem, op->dummy.nbytes == 0) return false; + /* DTR ops not supported. */ + if (op->cmd.dtr || op->addr.dtr || op->dummy.dtr || op->data.dtr) + return false; + if (op->cmd.nbytes != 1) + return false; + return true; } -- 2.30.2