[U-Boot] [PATCH 6/7] i2c: lpc32xx: fix write timeout
slemieux.tyco at gmail.com
slemieux.tyco at gmail.com
Mon Jul 27 19:37:39 CEST 2015
From: Sylvain Lemieux <slemieux at tycoint.com>
Fix a condition that generate watchdog timeout inside "lpc32xx_i2c_write" when parameters alen = 0 and len = 0.
Signed-off-by: Sylvain Lemieux <slemieux at tycoint.com>
---
drivers/i2c/lpc32xx_i2c.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/i2c/lpc32xx_i2c.c b/drivers/i2c/lpc32xx_i2c.c
index 4c66769..7f4eccd 100644
--- a/drivers/i2c/lpc32xx_i2c.c
+++ b/drivers/i2c/lpc32xx_i2c.c
@@ -200,6 +200,8 @@ static int lpc32xx_i2c_write(struct i2c_adapter *adap, u8 dev, uint addr,
if (alen | length)
/* Address slave in write mode */
writel((dev<<1) | LPC32XX_I2C_TX_START, &i2c->tx);
+ else
+ return 0;
/* write address bytes */
while (alen) {
/* wait for transmit fifo not full */
--
1.8.3.1
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