int ion_heap_buffer_zero(struct ion_buffer *buffer) { struct sg_table *table = buffer->sg_table; pgprot_t pgprot;
if (buffer->flags & ION_FLAG_CACHED) pgprot = PAGE_KERNEL; else pgprot = pgprot_writecombine(PAGE_KERNEL);
return ion_heap_sglist_zero(table->sgl, table->nents, pgprot);
}