1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index c31699d8df3a..0b1b1ae5e228 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -502,7 +502,7 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
         /* Some BIOSes don't like it when PEC is enabled at reboot or resume
            time, so we forcibly disable it after every transaction. Turn off
            E32B for the same reason. */
-        if (hwpec)
+        if (hwpec || block)
                 outb_p(inb_p(SMBAUXCTL) & ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B),
                        SMBAUXCTL);
 
@@ -625,6 +625,11 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
         else
                 dev_dbg(&dev->dev, "SMBus using PCI Interrupt\n");
 
+        /* Clear special mode bits */
+        if (i801_features & (FEATURE_SMBUS_PEC | FEATURE_BLOCK_BUFFER))
+                outb_p(inb_p(SMBAUXCTL) & ~(SMBAUXCTL_CRC | SMBAUXCTL_E32B),
+                       SMBAUXCTL);
+
         /* set up the sysfs linkage to our parent device */
         i801_adapter.dev.parent = &dev->dev;