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[v2,10/41] media: atomisp: add debug message to help debugging hmm code

Message ID 33194cee97bd5102335b72edd9adfcc7a3e23305.1590821410.git.mchehab+huawei@kernel.org
State New
Headers show
Series More atomisp fixes and cleanups | expand

Commit Message

Mauro Carvalho Chehab May 30, 2020, 6:55 a.m. UTC
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(+)
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Patch

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,