[v6,37/49] soc: fsl: qe: make cpm_muram_free() ignore a negative offset

Commit Message

Rasmus Villemoes Nov. 28, 2019, 2:55 p.m. UTC

This allows one to simplify callers since they can store a negative
value as a sentinel to indicate "this was never allocated" (or store
the -ENOMEM from an allocation failure) and then call cpm_muram_free()
unconditionally.

Reviewed-by: Timur Tabi <[e-mail]>
Signed-off-by: Rasmus Villemoes <[e-mail]>
---
 drivers/soc/fsl/qe/qe_common.c | 3 +++
 1 file changed, 3 insertions(+)

Patch

diff --git a/drivers/soc/fsl/qe/qe_common.c b/drivers/soc/fsl/qe/qe_common.c
index 962835488f66..48c77bb92846 100644
--- a/drivers/soc/fsl/qe/qe_common.c
+++ b/drivers/soc/fsl/qe/qe_common.c
@@ -176,6 +176,9 @@  void cpm_muram_free(s32 offset)
 	int size;
 	struct muram_block *tmp;
 
+	if (offset < 0)
+		return;
+
 	size = 0;
 	spin_lock_irqsave(&cpm_muram_lock, flags);
 	list_for_each_entry(tmp, &muram_block_list, head) {