gpiosim: use wrappers around container_of()

Simplify the code a bit by providing helpers that extract the underlying
structure from struct refcount using container_of().

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/tests/gpiosim/gpiosim.c b/tests/gpiosim/gpiosim.c
index 881ecc8559805bc563ac2771d6e286999fdc27b9..45a001397e3134df0427c451484805fe38a8aa58 100644 (file)
--- a/tests/gpiosim/gpiosim.c
+++ b/tests/gpiosim/gpiosim.c
@@ -413,6 +413,21 @@ struct gpiosim_bank {
        size_t num_lines;
 };
 
+static inline struct gpiosim_ctx *to_gpiosim_ctx(struct refcount *ref)
+{
+       return container_of(ref, struct gpiosim_ctx, refcnt);
+}
+
+static inline struct gpiosim_dev *to_gpiosim_dev(struct refcount *ref)
+{
+       return container_of(ref, struct gpiosim_dev, refcnt);
+}
+
+static inline struct gpiosim_bank *to_gpiosim_bank(struct refcount *ref)
+{
+       return container_of(ref, struct gpiosim_bank, refcnt);
+}
+
 static int ctx_open_configfs_dir(struct gpiosim_ctx *ctx, const char *cfs_path)
 {
        char *path;
@@ -504,7 +519,7 @@ out_free_ctx:
 
 static void ctx_release(struct refcount *ref)
 {
-       struct gpiosim_ctx *ctx = container_of(ref, struct gpiosim_ctx, refcnt);
+       struct gpiosim_ctx *ctx = to_gpiosim_ctx(ref);
 
        close(ctx->cfs_dir_fd);
 
@@ -560,7 +575,7 @@ GPIOSIM_API void gpiosim_ctx_unref(struct gpiosim_ctx *ctx)
 
 static void dev_release(struct refcount *ref)
 {
-       struct gpiosim_dev *dev = container_of(ref, struct gpiosim_dev, refcnt);
+       struct gpiosim_dev *dev = to_gpiosim_dev(ref);
        struct gpiosim_ctx *ctx = dev->ctx;
 
        if (dev->live)
@@ -824,8 +839,7 @@ GPIOSIM_API bool gpiosim_dev_is_live(struct gpiosim_dev *dev)
 
 static void bank_release(struct refcount *ref)
 {
-       struct gpiosim_bank *bank = container_of(ref, struct gpiosim_bank,
-                                                refcnt);
+       struct gpiosim_bank *bank = to_gpiosim_bank(ref);
        struct gpiosim_dev *dev = bank->dev;
        unsigned int i;
        char buf[64];