soc: fsl: qe: make cpm_muram_free() ignore a negative offset

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 <timur@kernel.org>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Li Yang <leoyang.li@nxp.com>

diff --git a/drivers/soc/fsl/qe/qe_common.c b/drivers/soc/fsl/qe/qe_common.c
index 9628354..48c77bb 100644 (file)
--- 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) {