From: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx>
The macro function of_match_ptr() is NULL if CONFIG_OF is not set, then
Clang compiler would complain the of_device_id variable is unused.
But using of_match_ptr() is space saving, for this case, the unused structure
'sprd_hwspinlock_of_match' would be not built into symbol table if CONFIG_OF
is not set, probably depends on the compiler though.
So adding __maybe_unsed seems a good approach to fix this warning.
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Fixes: d8c8bbbb1aba ("hwspinlock: sprd: Add hardware spinlock driver")
Signed-off-by: Chunyan Zhang <chunyan.zhang@xxxxxxxxxx>
---
drivers/hwspinlock/sprd_hwspinlock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwspinlock/sprd_hwspinlock.c b/drivers/hwspinlock/sprd_hwspinlock.c
index 36dc8038bbb4..4c63e2546064 100644
--- a/drivers/hwspinlock/sprd_hwspinlock.c
+++ b/drivers/hwspinlock/sprd_hwspinlock.c
@@ -138,7 +138,7 @@ static int sprd_hwspinlock_probe(struct platform_device *pdev)
SPRD_HWLOCKS_NUM);
}
-static const struct of_device_id sprd_hwspinlock_of_match[] = {
+static const __maybe_unused struct of_device_id sprd_hwspinlock_of_match[] = {
{ .compatible = "sprd,hwspinlock-r3p0", },
{ /* sentinel */ }
};
--
2.20.1
