The sticky bits must be cleared at the end of the transaction by writing
a 1 to all fields.
Datasheet:
SMBus Status (SMB_STS)
The following registers are all sticky bits and only can be
cleared by writing a one to their corresponding fields.
Signed-off-by: Amaury Decrême <amaury.decreme@xxxxxxxxx>
---
drivers/i2c/busses/i2c-sis630.c | 4 +---
1 files changed, 1 insertions(+), 3 deletions(-)
diff --git a/drivers/i2c/busses/i2c-sis630.c b/drivers/i2c/busses/i2c-sis630.c
index df8e20a..3124d80 100644
--- a/drivers/i2c/busses/i2c-sis630.c
+++ b/drivers/i2c/busses/i2c-sis630.c
@@ -213,10 +213,8 @@ static int sis630_transaction_wait(struct i2c_adapter *adap, int size)
static void sis630_transaction_end(struct i2c_adapter *adap, u8 oldclock)
{
- int temp = 0;
-
/* clear all status "sticky" bits */
- sis630_write(SMB_STS, temp);
+ sis630_write(SMB_STS, 0xFF);
dev_dbg(&adap->dev, "SMB_CNT before clock restore 0x%02x\n", sis630_read(SMB_CNT));
--
1.7.8.6
--
To unsubscribe from this list: send the line "unsubscribe linux-i2c" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
