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Subject[PATCH v8 03/19] spi: atmel-quadspi: reject DTR ops
Date
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@ti.com>
---
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 cb44d1e169aa..a898755fb41e 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;
}

--
2.26.2
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