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authorPavel Machek <pavel@ucw.cz>2009-08-08 15:40:50 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2009-09-15 12:02:05 -0700
commitc60adf37eb9cbb244025a0d02ba41bc7931bc674 (patch)
tree6bc16bf8f6ed936c890930c30f34afb4193a718c /drivers/staging/dream
parent420818f9755a5676db7c392ba6f77d795f13675b (diff)
Staging: dream: Synaptics touchscreen: check that smbus is available
Check that SMBUS APIs are available in touchscreen driver. Signed-off-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/dream')
-rw-r--r--drivers/staging/dream/synaptics_i2c_rmi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/staging/dream/synaptics_i2c_rmi.c b/drivers/staging/dream/synaptics_i2c_rmi.c
index 9190a9d86c7..ae696d3bc8e 100644
--- a/drivers/staging/dream/synaptics_i2c_rmi.c
+++ b/drivers/staging/dream/synaptics_i2c_rmi.c
@@ -373,6 +373,12 @@ static int __devinit synaptics_ts_probe(
goto err_check_functionality_failed;
}
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
+ pr_err("synaptics_ts_probe: need I2C_FUNC_SMBUS_WORD_DATA\n");
+ ret = -ENODEV;
+ goto err_check_functionality_failed;
+ }
+
ts = kzalloc(sizeof(*ts), GFP_KERNEL);
if (ts == NULL) {
ret = -ENOMEM;