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2016-04-22spi: pic32-sqi: silence array overflow warningDan Carpenter1-1/+1
We read one element beyond the end of the array when we access "rdesc[i + 1]" so it causes a static checker warning. It's harmless because we write over it again on the next line. But let's just silence the warning. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Purna Chandra Mandal <purna.mandal@microchip.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2016-04-18spi: pic32-sqi: add SPI driver for PIC32 SQI controller.Purna Chandra Mandal3-0/+775
This driver implements SPI master interface for Quad SPI controller, specifically for accessing quad SPI flash. It uses descriptor-based DMA transfer mode and supports half-duplex communication for single, dual and quad SPI transactions. Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by: Mark Brown <broonie@kernel.org>