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SubjectRe: [RFC PATCH 02/06] input/rmi4: Core files
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On Sat, Oct 6, 2012 at 9:06 AM, devendra.aaru <devendra.aaru@gmail.com> wrote:
> On Sat, Oct 6, 2012 at 8:19 AM, Joe Perches <joe@perches.com> wrote:
>> On Fri, 2012-10-05 at 21:09 -0700, Christopher Heiny wrote:
>> []
>>
>> Just some trivial comments:
>>
>>> diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
>> []
>>> @@ -0,0 +1,1529 @@
>> []
>>> +static ssize_t delay_write(struct file *filp, const char __user *buffer,
>>> + size_t size, loff_t *offset) {
>>> + struct driver_debugfs_data *data = filp->private_data;
>>> + struct rmi_device_platform_data *pdata =
>>> + data->rmi_dev->phys->dev->platform_data;
>>> + int retval;
>>> + char local_buf[size];
>>> + unsigned int new_read_delay;
>>> + unsigned int new_write_delay;
>>> + unsigned int new_block_delay;
>>> + unsigned int new_pre_delay;
>>> + unsigned int new_post_delay;
>>> +
>>> + retval = copy_from_user(local_buf, buffer, size);
>>> + if (retval)
>>> + return -EFAULT;
>>> +
>>> + retval = sscanf(local_buf, "%u %u %u %u %u", &new_read_delay,
>>> + &new_write_delay, &new_block_delay,
>>> + &new_pre_delay, &new_post_delay);
>>> + if (retval != 5) {
>>> + dev_err(&data->rmi_dev->dev,
>>> + "Incorrect number of values provided for delay.");
>>> + return -EINVAL;
>>> + }
>>> + if (new_read_delay < 0) {
>>
>> These are unnecessary tests as unsigned values are never < 0.
>>
>
Oops, i m sorry, i mistakenly took the variable as int, it should be
unsinged int.

sorry joe, you are right the are never < 0.

Thanks,


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