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 <[email protected]> Signed-off-by: Grant Likely <[email protected]>
jbg · Apr 27, 2012 · 2431a81 · 2431a81
1 parent 128465c
commit 2431a81
Showing 1 changed file with 4 additions and 1 deletion.
diff --git 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 */