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hwmon: (ads1015) Fix out-of-bounds array access 

commit e981429557cbe10c780fab1c1a237cb832757652 upstream.

Current code uses data_rate as array index in ads1015_read_adc() and uses pga
as array index in ads1015_reg_to_mv, so we must make sure both data_rate and
pga settings are in valid value range.
Return -EINVAL if the setting is out-of-range.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Axel Lin 2014-08-05 09:59:49 +08:00 committed by Greg Kroah-Hartman
parent 53f281f2b4
commit f93978fdb5
1 changed files with 2 additions and 0 deletions
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2
drivers/hwmon/ads1015.c
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@ -198,6 +198,7 @@ static int ads1015_get_channels_config_of(struct i2c_client *client)
dev_err(&client->dev,
"invalid gain on %s\n",
node->full_name);
return -EINVAL;
}
}
@ -208,6 +209,7 @@ static int ads1015_get_channels_config_of(struct i2c_client *client)
dev_err(&client->dev,
"invalid data_rate on %s\n",
node->full_name);
return -EINVAL;
}
}