diff mbox series

[v5,37/48] soc: fsl: qe: make cpm_muram_free() ignore a negative offset

Message ID 20191118112324.22725-38-linux@rasmusvillemoes.dk (mailing list archive)
State Not Applicable
Headers show
Series QUICC Engine support on ARM, ARM64, PPC64 | expand

Checks

Context Check Description
snowpatch_ozlabs/apply_patch success Successfully applied on branch powerpc/merge (784eee1cc44801366d4f197e0ade7739ee8e1e83)
snowpatch_ozlabs/checkpatch success total: 0 errors, 0 warnings, 0 checks, 9 lines checked
snowpatch_ozlabs/needsstable success Patch has no Fixes tags

Commit Message

Rasmus Villemoes Nov. 18, 2019, 11:23 a.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.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
 drivers/soc/fsl/qe/qe_common.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

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) {