Re: [RFC] ion:change ion_cma_allocate return error value

['gregkh@xxxxxxxxxxxxxxxxxxx']

On Tue, Jan 27, 2015 at 02:04:21PM +0800, Wang, Yalin wrote:
> This patch change the error return value from -1 to -ENOMEM,
> so that userspace can get the correct errno, otherwise,
> -1 will be -EPERM, userspace will print permission deny for allocation
> failure.
> 
> Signed-off-by: Yalin Wang <yalin.wang@xxxxxxxxxxxxxx>
> ---
>  drivers/staging/android/ion/ion_cma_heap.c | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)

Don't you also need to now change userspace code to properly handle
these errors?

greg k-h
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