I managed to trigger an atomisp_css_start() error by pushing my test
system towards an OOM situation, this resulted in the following errors:
atomisp-isp2 0000:00:03.0: alloc pages err...
atomisp-isp2 0000:00:03.0: hmm_bo_alloc_pages failed.
atomisp-isp2 0000:00:03.0: stream[0] start error.
But it is not entirely clear what the root cause of
the "alloc pages err..." error is. I suspect the root cause is
alloc_pages_bulk_array() failing. Add a log message to make
the root cause more clear if this is hit again.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/staging/media/atomisp/pci/hmm/hmm_bo.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
index 465ba837f2ed..3c150268db51 100644
--- a/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
+++ b/drivers/staging/media/atomisp/pci/hmm/hmm_bo.c
@@ -637,6 +637,7 @@ static int alloc_private_pages(struct hmm_buffer_object *bo)
ret = alloc_pages_bulk_array(gfp, bo->pgnr, bo->pages);
if (ret != bo->pgnr) {
+ dev_err(atomisp_dev, "alloc_pages_bulk_array() failed\n");
free_pages_bulk_array(ret, bo->pages);
return -ENOMEM;
}
--
2.38.1
