spi: Add support to handle kmap'd buffers in spi_map_buf()

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JFFS2 FS might sometime provide kmap'd buffers as destination
buffers to read data from flash. Update spi_map_buf() function to
generate sg_list for such buffers, so that SPI controllers drivers can
use DMA to read data into such buffers.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

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Vignesh R 2016-08-17 15:22:36 +05:30 • committed by Mark Brown

parent 29b4817d40

commit b1b8153cf0

1 changed files with 14 additions and 3 deletions

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drivers/spi/spi.c

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