[RFC PATCH 2/2] mtd: devices: m25p80: Enable spi-nor bounce buffer support

Vignesh R vigneshr at ti.com
Mon Feb 27 04:08:39 PST 2017


Many SPI controller drivers use DMA to read/write from m25p80 compatible
flashes. Therefore enable bounce buffers support provided by spi-nor
framework to take care of handling vmalloc'd buffers which may not be
DMA'able.

Signed-off-by: Vignesh R <vigneshr at ti.com>
---
 drivers/mtd/devices/m25p80.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c
index c4df3b1bded0..d05acf22eadf 100644
--- a/drivers/mtd/devices/m25p80.c
+++ b/drivers/mtd/devices/m25p80.c
@@ -241,6 +241,7 @@ static int m25p_probe(struct spi_device *spi)
 	else
 		flash_name = spi->modalias;
 
+	nor->flags |= SNOR_F_USE_BOUNCE_BUFFER;
 	ret = spi_nor_scan(nor, flash_name, mode);
 	if (ret)
 		return ret;
-- 
2.11.0




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