From 0ba8b8bfd56533f0b9af7513c6ebbc10c79ae052 Mon Sep 17 00:00:00 2001 From: Daniel Kurtz <djkurtz@chromium.org> Date: Tue, 24 Jul 2012 14:13:57 +0200 Subject: [PATCH] i2c-i801: Clear only status bits in HST_STS 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@chromium.org> Signed-off-by: Jean Delvare <khali@linux-fr.org> --- drivers/i2c/busses/i2c-i801.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 51e11eb64abcdc..05f394938b8273 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -300,7 +300,7 @@ 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, -- GitLab