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Subject[PATCH v2 10/41] media: atomisp: add debug message to help debugging hmm code
Date
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>
---
drivers/staging/media/atomisp/pci/hmm/hmm_bo.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
index 6fce8c95be1d..b6dcd246d7af 100644
--- a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
+++ b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
@@ -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,
--
2.26.2
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