ec23ff584a
Improve debugging infrastructure and logging for memory related issues. There are scenarios where the fd returned after ion_alloc exists in camera smmu table as being mapped [stale entry]. On such scenarios, this change will return a specific error code to userspace. The change also propagates the mapped size back to user space. CRs-Fixed: 2663114 Change-Id: Ia797b65d1e8ded58dec5b01df07d73262c4cfa95 Signed-off-by: Karthik Anantha Ram <kartanan@codeaurora.org>