[PATCH v10 04/17] spi: spi-mtk-nor: reject DTR ops
From: Pratyush Yadav <hidden>
Date: 2020-06-23 18:31:19
Also in:
linux-mediatek, linux-spi, lkml
Subsystem:
spi subsystem, the rest · Maintainers:
Mark Brown, Linus Torvalds
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 <redacted> --- drivers/spi/spi-mtk-nor.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/spi/spi-mtk-nor.c b/drivers/spi/spi-mtk-nor.c
index d5f393871619..b08d8e9a8ee9 100644
--- a/drivers/spi/spi-mtk-nor.c
+++ b/drivers/spi/spi-mtk-nor.c@@ -211,6 +211,12 @@ 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->cmd.nbytes != 1) + 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;
--
2.27.0
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