From drivers/staging/android TODO file - sparse errors.
The current code attempts assignment of -1 to unsigned type gfp_t.
Assignment should be an enumerated type of GFP_KERNEL, GFP_ATOMIC,
GFP_HIGHMEM, or __GFP_HIGH.
The original 2014 patch by Gioh Kim adding debugfs support to android/ion
used __GFP_HIGHMEM as the mask, but was removed in a subsequent revert.
This patch removes the sparse errors, and fixes the assignment as noted
above.
Signed-off-by: Derek Yerger <d...@drexel.edu>
---
diff --git a/drivers/staging/android/ion/ion.c
b/drivers/staging/android/ion/ion.c
index c97e82b..a9ca46f 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -1524,7 +1524,7 @@ static int debug_shrink_set(void *data, u64 val)
struct shrink_control sc;
int objs;
- sc.gfp_mask = -1;
+ sc.gfp_mask = __GFP_HIGHMEM;
sc.nr_to_scan = val;
if (!val) {
@@ -1542,7 +1542,7 @@ static int debug_shrink_get(void *data, u64 *val)
struct shrink_control sc;
int objs;
- sc.gfp_mask = -1;
+ sc.gfp_mask = __GFP_HIGHMEM;
sc.nr_to_scan = 0;
objs = heap->shrinker.count_objects(&heap->shrinker, &sc);
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