Hi Dmitry,
Thanks for the review.
On Fri, Jul 25, 2014 at 9:52 PM, Dmitry Torokhov
<dmitry.torokhov@xxxxxxxxx> wrote:
> Hi Pramod,
>
> On Fri, Jul 25, 2014 at 05:04:34PM +0530, pramod.gurav.etc@xxxxxxxxx wrote:
>> From: Pramod Gurav <pramod.gurav@xxxxxxxxxxxxxxx>
>>
>> This patch does below:
>> - Removes kfree done on data allocated with devm_zalloc in probe
>> path of the driver.
>> - Adds a check on return value from devm_kzalloc which was missing
>>
>> CC: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
>> CC: Lejun Zhu <lejun.zhu@xxxxxxxxxxxxxxx>
>> CC: Sachin Kamat <sachin.kamat@xxxxxxxxxx>
>>
>> Signed-off-by: Pramod Gurav <pramod.gurav@xxxxxxxxxxxxxxx>
>> ---
>> drivers/input/misc/soc_button_array.c | 17 +++++++----------
>> 1 file changed, 7 insertions(+), 10 deletions(-)
>>
>> diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c
>> index 5a6334b..fc64ec6 100644
>> --- a/drivers/input/misc/soc_button_array.c
>> +++ b/drivers/input/misc/soc_button_array.c
>> @@ -83,6 +83,9 @@ soc_button_device_create(struct pnp_dev *pdev,
>> sizeof(*gpio_keys_pdata) +
>> sizeof(*gpio_keys) * MAX_NBUTTONS,
>> GFP_KERNEL);
>> + if (!gpio_keys_pdata)
>> + return ERR_PTR(-ENOMEM);
>
> OK, that makes sense.
>
>> +
>> gpio_keys = (void *)(gpio_keys_pdata + 1);
>>
>> for (info = button_info; info->name; info++) {
>> @@ -102,20 +105,16 @@ soc_button_device_create(struct pnp_dev *pdev,
>> n_buttons++;
>> }
>>
>> - if (n_buttons == 0) {
>> - error = -ENODEV;
>> - goto err_free_mem;
>> - }
>> + if (n_buttons == 0)
>> + return ERR_PTR(-ENODEV);
>
> But that one and the rest don't, because failure in
> soc_button_device_create() does not necessarily mean that binding for
> the whole device will fail. In this case we do not want unused memory
> hang around.
Agree. Should resend the patch with only the error check after mem
allocation and will be little more careful while sending any such
change. :)
>
> Thanks.
>
> --
> Dmitry
--
Thanks and Regards
Pramod
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