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media: atomisp: add debug message to help debugging hmm code 

The hmm code is partially based on a fork from 3.10 code,
and has bugs.

Add debug there to help tracking what happens there.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Mauro Carvalho Chehab 2020-05-26 10:11:14 +02:00
parent 576680cd01
commit e19718f6de
1 changed files with 5 additions and 0 deletions
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5
drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
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@ -1015,6 +1015,11 @@ static int alloc_user_pages(struct hmm_buffer_object *bo,
bo->mem_type = HMM_BO_MEM_TYPE_USER;
}
dev_dbg(atomisp_dev, "%s: %d %s pages were allocated as 0x%08x\n",
__func__,
bo->pgnr,
bo->mem_type == HMM_BO_MEM_TYPE_USER ? "user" : "pfn", page_nr);
/* can be written by caller, not forced */
if (page_nr != bo->pgnr) {
dev_err(atomisp_dev,