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regulator: lp872x: Return -EINVAL if pdata is NULL 

Return -EINVAL if pdata is NULL, otherwise we have NULL dereference bug.
This patch also moves the code checking pdata earlier in lp872x_probe.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Axel Lin 2012-06-20 16:13:15 +08:00 committed by Mark Brown
parent f503071b03
commit baf73e2c4e
1 changed files with 5 additions and 5 deletions
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10
drivers/regulator/lp872x.c
View File

@ -785,11 +785,6 @@ static int lp872x_config(struct lp872x *lp)
struct lp872x_platform_data *pdata = lp->pdata;
int ret;
if (!pdata) {
dev_warn(lp->dev, "no platform data\n");
return 0;
}
if (!pdata->update_config)
return 0;
@ -889,6 +884,11 @@ static int lp872x_probe(struct i2c_client *cl, const struct i2c_device_id *id)
[LP8725] = LP8725_NUM_REGULATORS,
};
if (!pdata) {
dev_warn(&cl->dev, "no platform data\n");
return -EINVAL;
}
lp = devm_kzalloc(&cl->dev, sizeof(struct lp872x), GFP_KERNEL);
if (!lp)
goto err_mem;