Writing back the whole status register could clear unwanted bits. In particular, it could clear the "INUSE_STS" bit, which is a 'hardware semaphore', that might be useful to use some day. To prepare for this, let's ban writing back the whole status to register HST_STS, of which this is the only instance. Signed-off-by: Daniel Kurtz <djkurtz@xxxxxxxxxxxx> Reported-by: Jean Delvare <khali@xxxxxxxxxxxx> --- drivers/i2c/busses/i2c-i801.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index ae2945a..7443990 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -301,7 +301,7 @@ static void i801_wait_hwpec(struct i801_priv *priv) if (timeout > MAX_RETRIES) dev_dbg(&priv->pci_dev->dev, "PEC Timeout!\n"); - outb_p(status, SMBHSTSTS(priv)); + outb_p(status & STATUS_FLAGS, SMBHSTSTS(priv)); } static int i801_block_transaction_by_block(struct i801_priv *priv, -- 1.7.7.3 -- 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
