1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/i2c/busses/i2c-viapro.c b/drivers/i2c/busses/i2c-viapro.c
index c9ce77f13c0e..661ebc7a711e 100644
--- a/drivers/i2c/busses/i2c-viapro.c
+++ b/drivers/i2c/busses/i2c-viapro.c
@@ -318,6 +318,10 @@ static int __devinit vt596_probe(struct pci_dev *pdev,
         unsigned char temp;
         int error = -ENODEV;
 
+        /* driver_data might come from user-space, so check it */
+        if (id->driver_data & 1 || id->driver_data > 0xff)
+                return -EINVAL;
+
         /* Determine the address of the SMBus areas */
         if (force_addr) {
                 vt596_smba = force_addr & 0xfff0;
@@ -455,6 +459,7 @@ static struct pci_driver vt596_driver = {
         .name           = "vt596_smbus",
         .id_table       = vt596_ids,
         .probe          = vt596_probe,
+        .dynids.use_driver_data = 1,
 };
 
 static int __init i2c_vt596_init(void)