Re: [PATCH] staging: android: ion: dummy: fix dereference of ERR_PTR

[Laura Abbott <labbott@redhat.com>]

On 04/07/2016 09:32 AM, Sudip Mukherjee wrote:
> ion_device_create() can fail and if it fails then it returns the error
> value in ERR_PTR.
>

Reviewed-by: Laura Abbott <labbott@redhat.com>

> Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
> ---
>   drivers/staging/android/ion/ion_dummy_driver.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/staging/android/ion/ion_dummy_driver.c b/drivers/staging/android/ion/ion_dummy_driver.c
> index 5678870..806e76b 100644
> --- a/drivers/staging/android/ion/ion_dummy_driver.c
> +++ b/drivers/staging/android/ion/ion_dummy_driver.c
> @@ -68,6 +68,8 @@ static int __init ion_dummy_init(void)
>   	int i, err;
>
>   	idev = ion_device_create(NULL);
> +	if (IS_ERR(idev))
> +		return PTR_ERR(idev);
>   	heaps = kcalloc(dummy_ion_pdata.nr, sizeof(struct ion_heap *),
>   			GFP_KERNEL);
>   	if (!heaps)
>