On 09/07/2016 12:37 PM, Arnd Bergmann wrote:
On Wednesday, September 7, 2016 11:49:59 AM CEST Laura Abbott wrote:
- if (dir & _IOC_WRITE)
- if (copy_from_user(&data, (void __user *)arg, _IOC_SIZE(cmd)))
- return -EFAULT;
+ /*
+* The copy_f
On Wednesday, September 7, 2016 11:49:59 AM CEST Laura Abbott wrote:
> - if (dir & _IOC_WRITE)
> - if (copy_from_user(&data, (void __user *)arg, _IOC_SIZE(cmd)))
> - return -EFAULT;
> + /*
> + * The copy_from_user is unconditional here for both read and
Ion clients currently lack a good method to determine what
heaps are available and what ids they map to. This leads
to tight coupling between user and kernel space and headaches.
Add a query ioctl to let userspace know the availability of
heaps.
Signed-off-by: Laura Abbott
---
v3: Include some r
