[PATCH] i2c: aspeed: Nullify bus messages after timeout

[Eddie James]

For multimaster case, it's conceivable that an interrupt comes
in after the transfer times out and attempts to use bus messages
that have already been freed by the i2c core.

Signed-off-by: Eddie James <eajames at linux.ibm.com>
---
 drivers/i2c/busses/i2c-aspeed.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-aspeed.c b/drivers/i2c/busses/i2c-aspeed.c
index 1550d3d552aed..e344dcc2233fe 100644
--- a/drivers/i2c/busses/i2c-aspeed.c
+++ b/drivers/i2c/busses/i2c-aspeed.c
@@ -731,6 +731,7 @@ static int aspeed_i2c_master_xfer(struct i2c_adapter *adap,
 		 * master command.
 		 */
 		spin_lock_irqsave(&bus->lock, flags);
+		bus->msgs = NULL;
 		if (bus->master_state == ASPEED_I2C_MASTER_PENDING)
 			bus->master_state = ASPEED_I2C_MASTER_INACTIVE;
 		spin_unlock_irqrestore(&bus->lock, flags);
-- 
2.43.5