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spi: spi-geni-qcom: enable SPI_CONTROLLER_MUST_TX for GPI DMA mode
[ Upstream commitd10005837b
] The GPI DMA mode requires for TX DMA to be prepared. Force SPI core to provide TX buffer even if the caller didn't provide one by setting the SPI_CONTROLLER_MUST_TX flag. Fixes:b59c122484
("spi: spi-geni-qcom: Add support for GPI dma") Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20230629095847.3648597-1-dmitry.baryshkov@linaro.org Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 6 additions and 0 deletions
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@ -979,6 +979,12 @@ static int spi_geni_probe(struct platform_device *pdev)
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if (mas->cur_xfer_mode == GENI_SE_FIFO)
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spi->set_cs = spi_geni_set_cs;
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/*
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* TX is required per GSI spec, see setup_gsi_xfer().
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*/
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if (mas->cur_xfer_mode == GENI_GPI_DMA)
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spi->flags = SPI_CONTROLLER_MUST_TX;
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ret = request_irq(mas->irq, geni_spi_isr, 0, dev_name(dev), spi);
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if (ret)
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goto spi_geni_release_dma;
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