[PATCH 11/18] dbtr: Succeed operations with no triggers in mask

[Nicholas Piggin]

Trigger operations that use bitmasks should succeed if there are no
triggers in the mask.

Signed-off-by: Nicholas Piggin <npiggin at gmail.com>
---
 lib/sbi/sbi_dbtr.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/lib/sbi/sbi_dbtr.c b/lib/sbi/sbi_dbtr.c
index f72c76f2..5735bdc6 100644
--- a/lib/sbi/sbi_dbtr.c
+++ b/lib/sbi/sbi_dbtr.c
@@ -694,6 +694,9 @@ int sbi_dbtr_uninstall_trig(unsigned long trig_idx_base,
 	if (!hs)
 		return SBI_ERR_FAILED;
 
+	if (!trig_idx_mask)
+		return SBI_SUCCESS;
+
 	if (trig_idx_base >= hs->total_trigs ||
 		find_last_bit(&trig_idx_mask, hs->total_trigs) +
 				trig_idx_base >= hs->total_trigs)
@@ -728,6 +731,9 @@ int sbi_dbtr_enable_trig(unsigned long trig_idx_base,
 	if (!hs)
 		return SBI_ERR_FAILED;
 
+	if (!trig_idx_mask)
+		return SBI_SUCCESS;
+
 	if (trig_idx_base >= hs->total_trigs ||
 		find_last_bit(&trig_idx_mask, hs->total_trigs) +
 				trig_idx_base >= hs->total_trigs)
@@ -844,6 +850,9 @@ int sbi_dbtr_disable_trig(unsigned long trig_idx_base,
 	if (!hs)
 		return SBI_ERR_FAILED;
 
+	if (!trig_idx_mask)
+		return SBI_SUCCESS;
+
 	if (trig_idx_base >= hs->total_trigs ||
 		find_last_bit(&trig_idx_mask, hs->total_trigs) +
 				trig_idx_base >= hs->total_trigs)
-- 
2.51.0