[PATCH 3.16.y-ckt 037/142] drivers: android: correct the size of struct binder_uintptr_t for BC_DEAD_BINDER_DONE

From: Luis Henriques
Date: Tue Mar 22 2016 - 07:15:16 EST

3.16.7-ckt26 -stable review patch. If anyone has any objections, please let me know.


From: Lisa Du <cldu@xxxxxxxxxxx>

commit 7a64cd887fdb97f074c3fda03bee0bfb9faceac3 upstream.

There's one point was missed in the patch commit da49889deb34 ("staging:
binder: Support concurrent 32 bit and 64 bit processes."). When configure
BINDER_IPC_32BIT, the size of binder_uintptr_t was 32bits, but size of
void * is 64bit on 64bit system. Correct it here.

Signed-off-by: Lisa Du <cldu@xxxxxxxxxxx>
Signed-off-by: Nicolas Boichat <drinkcat@xxxxxxxxxxxx>
Fixes: da49889deb34 ("staging: binder: Support concurrent 32 bit and 64 bit processes.")
Acked-by: Olof Johansson <olof@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
[ luis: backported to 3.16:
- binder is still in staging in the 3.16 kernel]
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
drivers/staging/android/binder.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index a741da77828a..3b79624703a7 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -2049,7 +2049,7 @@ static int binder_thread_write(struct binder_proc *proc,
if (get_user(cookie, (binder_uintptr_t __user *)ptr))
return -EFAULT;

- ptr += sizeof(void *);
+ ptr += sizeof(cookie);
list_for_each_entry(w, &proc->delivered_death, entry) {
struct binder_ref_death *tmp_death = container_of(w, struct binder_ref_death, work);