diff options
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 1d042af4374d..c0c0cac9950c 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -118,7 +118,6 @@ #define SMBSLVSTS(p) (16 + (p)->smba) /* ICH3 and later */ #define SMBSLVCMD(p) (17 + (p)->smba) /* ICH3 and later */ #define SMBNTFDADD(p) (20 + (p)->smba) /* ICH3 and later */ -#define SMBNTFDDAT(p) (22 + (p)->smba) /* ICH3 and later */ /* PCI Address Constants */ #define SMBBAR 4 @@ -581,12 +580,15 @@ static void i801_isr_byte_done(struct i801_priv *priv) static irqreturn_t i801_host_notify_isr(struct i801_priv *priv) { unsigned short addr; - unsigned int data; addr = inb_p(SMBNTFDADD(priv)) >> 1; - data = inw_p(SMBNTFDDAT(priv)); - i2c_handle_smbus_host_notify(priv->host_notify, addr, data); + /* + * With the tested platforms, reading SMBNTFDDAT (22 + (p)->smba) + * always returns 0 and is safe to read. + * We just use 0 given we have no use of the data right now. + */ + i2c_handle_smbus_host_notify(priv->host_notify, addr, 0); /* clear Host Notify bit and return */ outb_p(SMBSLVSTS_HST_NTFY_STS, SMBSLVSTS(priv)); |