From: luowei <lw@rock-chips.com>
Date: Mon, 4 Aug 2014 01:14:23 +0000 (+0800)
Subject: spi:fix the bug while read one byte
X-Git-Tag: firefly_0821_release~4916^2~75
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=808c5ddbae9cb7df9359a88d0ee68fd374279278;p=firefly-linux-kernel-4.4.55.git

spi:fix the bug while read one byte
---

diff --git a/drivers/spi/spi-rockchip-core.c b/drivers/spi/spi-rockchip-core.c
index af4ac86d6d60..63aacfd2f8be 100755
--- a/drivers/spi/spi-rockchip-core.c
+++ b/drivers/spi/spi-rockchip-core.c
@@ -731,10 +731,10 @@ static void pump_transfers(unsigned long data)
 
         dw_writew(dws, SPIM_CTRLR1, dws->len-1);
 		
-		if (txint_level)
+		if (txint_level != dw_readl(dws, SPIM_TXFTLR))
 			dw_writew(dws, SPIM_TXFTLR, txint_level);
 			
-		if (rxint_level)
+		if (rxint_level != dw_readl(dws, SPIM_RXFTLR))
 		{
 			dw_writew(dws, SPIM_RXFTLR, rxint_level);
 			DBG_SPI("%s:rxint_level=%d\n",__func__,rxint_level);