Re: [PATCH] input: ims-pcu: remove redundant assignment to variable 'error'

[Colin Ian King <colin.king@canonical.com>]

On 03/06/2020 15:09, Dan Carpenter wrote:
> On Wed, Jun 03, 2020 at 02:51:02PM +0100, Colin King wrote:
>> From: Colin Ian King <colin.king@canonical.com>
>>
>> The variable error is being initialized with a value that is
>> never read and the -ENOMEM error return is being returned anyhow
>> by the error exit path to label err_free_mem.  The assignment is
>> redundant and can be removed.
>>
>> Addresses-Coverity: ("Unused value")
>> Signed-off-by: Colin Ian King <colin.king@canonical.com>
>> ---
>>  drivers/input/misc/ims-pcu.c | 1 -
>>  1 file changed, 1 deletion(-)
>>
>> diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c
>> index d8dbfc030d0f..4ba68aa3d281 100644
>> --- a/drivers/input/misc/ims-pcu.c
>> +++ b/drivers/input/misc/ims-pcu.c
>> @@ -292,7 +292,6 @@ static int ims_pcu_setup_gamepad(struct ims_pcu *pcu)
>>  	if (!gamepad || !input) {
>>  		dev_err(pcu->dev,
>>  			"Not enough memory for gamepad device\n");
>> -		error = -ENOMEM;
>>  		goto err_free_mem;
> 
> It would be better to change the return instead.
> 
> regards,
> dan carpenter
> 

I'm not sure about that, the err_free_mem path is used by another error
exit return path that also needs to free the device and gamepad and
returns ENOMEM, so I think this is a good enough shared error exit strategy.

Colin