spi/spi-bfin5xx: Fix flush of last bit after each spi transfer

This patch ensures that the last bit of a transfer gets correctly
flushed out of the register.

Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

diff --git a/drivers/spi/spi-bfin5xx.c b/drivers/spi/spi-bfin5xx.c
index 432d019..9bb4d4a 100644 (file)
--- a/drivers/spi/spi-bfin5xx.c
+++ b/drivers/spi/spi-bfin5xx.c
@@ -587,6 +587,7 @@ static void bfin_spi_pump_transfers(unsigned long data)
        if (message->state == DONE_STATE) {
                dev_dbg(&drv_data->pdev->dev, "transfer: all done!\n");
                message->status = 0;
+               bfin_spi_flush(drv_data);
                bfin_spi_giveback(drv_data);
                return;
        }
@@ -870,8 +871,10 @@ static void bfin_spi_pump_transfers(unsigned long data)
                message->actual_length += drv_data->len_in_bytes;
                /* Move to next transfer of this msg */
                message->state = bfin_spi_next_transfer(drv_data);
-               if (drv_data->cs_change)
+               if (drv_data->cs_change && message->state != DONE_STATE) {
+                       bfin_spi_flush(drv_data);
                        bfin_spi_cs_deactive(drv_data, chip);
+               }
        }
 
        /* Schedule next transfer tasklet */