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-rw-r--r--drivers/spi/spi_bfin5xx.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index ab483a0ec6d0..d3da41d3f92d 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -504,6 +504,15 @@ static irqreturn_t bfin_spi_dma_irq_handler(int irq, void *dev_id)
"in dma_irq_handler dmastat:0x%x spistat:0x%x\n",
dmastat, spistat);
+ if (drv_data->rx != NULL) {
+ u16 cr = read_CTRL(drv_data);
+ /* discard old RX data and clear RXS */
+ bfin_spi_dummy_read(drv_data);
+ write_CTRL(drv_data, cr & ~BIT_CTL_ENABLE); /* Disable SPI */
+ write_CTRL(drv_data, cr & ~BIT_CTL_TIMOD); /* Restore State */
+ write_STAT(drv_data, BIT_STAT_CLR); /* Clear Status */
+ }
+
clear_dma_irqstat(drv_data->dma_channel);
/*