staging: ion: Fix ion_cma_heap allocations

In trying to add support for drm_hwcomposer to HiKey,
I've needed to utilize the ION CMA heap, and I've noticed
problems with allocations on newer kernels failing.

It seems back with 204f672255c2 ("ion: Use CMA APIs directly"),
the ion_cma_heap code was modified to use the CMA API, but
kept the arguments as buffer lengths rather then number of pages.

This results in errors as we don't have enough pages in CMA to
satisfy the exaggerated requests.

This patch converts the ion_cma_heap CMA API usage to properly
request pages.

It also fixes a minor issue in the allocation where in the error
path, the cma_release is called with the buffer->size value which
hasn't yet been set.

Cc: Laura Abbott <[email protected]>
Cc: Sumit Semwal <[email protected]>
Cc: Benjamin Gaignard <[email protected]>
Cc: Archit Taneja <[email protected]>
Cc: Greg KH <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: Dmitry Shmidt <[email protected]>
Cc: Todd Kjos <[email protected]>
Cc: Amit Pundir <[email protected]>
Fixes: 204f672255c2 ("staging: android: ion: Use CMA APIs directly")
Acked-by: Laura Abbott <[email protected]>
Signed-off-by: John Stultz <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

0 files changed, 0 insertions, 0 deletions