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-rw-r--r--drivers/i2c/busses/i2c-pxa.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index 14e83d0aac8c..2fc3bcec24d8 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -539,6 +539,18 @@ static inline void i2c_pxa_start_message(struct pxa_i2c *i2c)
writel(icr | ICR_START | ICR_TB, _ICR(i2c));
}
+static inline void i2c_pxa_stop_message(struct pxa_i2c *i2c)
+{
+ u32 icr;
+
+ /*
+ * Clear the STOP and ACK flags
+ */
+ icr = readl(_ICR(i2c));
+ icr &= ~(ICR_STOP | ICR_ACKNAK);
+ writel(icr, _IRC(i2c));
+}
+
/*
* We are protected by the adapter bus mutex.
*/
@@ -581,6 +593,7 @@ static int i2c_pxa_do_xfer(struct pxa_i2c *i2c, struct i2c_msg *msg, int num)
* The rest of the processing occurs in the interrupt handler.
*/
timeout = wait_event_timeout(i2c->wait, i2c->msg_num == 0, HZ * 5);
+ i2c_pxa_stop_message(i2c);
/*
* We place the return code in i2c->msg_idx.