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Staging: dream: Synaptics touchscreen: check that smbus is available

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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>
This commit is contained in:
Pavel Machek
2009-08-08 15:40:50 +02:00
committed by Greg Kroah-Hartman
parent 420818f975
commit c60adf37eb
1 changed files with 6 additions and 0 deletions
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6
drivers/staging/dream/synaptics_i2c_rmi.c
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@@ -373,6 +373,12 @@ static int __devinit synaptics_ts_probe(
goto err_check_functionality_failed; 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); ts = kzalloc(sizeof(*ts), GFP_KERNEL);
if (ts == NULL) { if (ts == NULL) {
ret = -ENOMEM; ret = -ENOMEM;