Messages in this thread Patch in this message | | | Subject | [PATCH] power_supply: pm2301_charger: Fix NULL pointer dereference | From | Axel Lin <> | Date | Thu, 16 May 2013 17:31:00 +0800 |
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Add checking pl_data in probe, this prevent possible NULL pointer dereference. Also fix NULL pointer deference in dev_err when allocate memory for pm2 fails.
Signed-off-by: Axel Lin <axel.lin@ingics.com> --- drivers/power/pm2301_charger.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c index a441751..c972389 100644 --- a/drivers/power/pm2301_charger.c +++ b/drivers/power/pm2301_charger.c @@ -1007,9 +1007,14 @@ static int pm2xxx_wall_charger_probe(struct i2c_client *i2c_client, u8 val; int i; + if (!pl_data) { + dev_err(&i2c_client->dev, "No platform data supplied\n"); + return -EINVAL; + } + pm2 = kzalloc(sizeof(struct pm2xxx_charger), GFP_KERNEL); if (!pm2) { - dev_err(pm2->dev, "pm2xxx_charger allocation failed\n"); + dev_err(&i2c_client->dev, "pm2xxx_charger allocation failed\n"); return -ENOMEM; } -- 1.8.1.2
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