docs: spi: spi.h: fix a doc building warning
We need to add a blank line to avoid this warning: ./include/linux/spi/spi.h:401: WARNING: Unexpected indentation. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/1c701b3ac903dc0bc304dca958fbdee53bd38dc3.1586881715.git.mchehab+huawei@kernel.org Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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@ -394,6 +394,7 @@ static inline void spi_unregister_driver(struct spi_driver *sdrv)
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* for example doing DMA mapping. Called from threaded
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* for example doing DMA mapping. Called from threaded
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* context.
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* context.
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* @transfer_one: transfer a single spi_transfer.
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* @transfer_one: transfer a single spi_transfer.
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*
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* - return 0 if the transfer is finished,
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* - return 0 if the transfer is finished,
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* - return 1 if the transfer is still in progress. When
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* - return 1 if the transfer is still in progress. When
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* the driver is finished with this transfer it must
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* the driver is finished with this transfer it must
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