[PATCH 07/12] [media] dvb_frontend: merge the two dvb_frontend_detach() versions

From: Max Kellermann
Date: Tue Aug 09 2016 - 17:41:54 EST


This code duplication is confusing and error prone. Let's merge them
by moving the release/dvb_detach call into one function with one
#ifdef.

Signed-off-by: Max Kellermann <max.kellermann@xxxxxxxxx>
---
drivers/media/dvb-core/dvb_frontend.c | 42 +++++++++------------------------
1 file changed, 12 insertions(+), 30 deletions(-)

diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index fea635b..1177414 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -2754,40 +2754,22 @@ int dvb_unregister_frontend(struct dvb_frontend* fe)
}
EXPORT_SYMBOL(dvb_unregister_frontend);

-#ifdef CONFIG_MEDIA_ATTACH
-void dvb_frontend_detach(struct dvb_frontend* fe)
+static void dvb_frontend_invoke_release(struct dvb_frontend *fe,
+ void (*release)(struct dvb_frontend *fe))
{
- void *ptr;
-
- if (fe->ops.release_sec) {
- fe->ops.release_sec(fe);
- dvb_detach(fe->ops.release_sec);
- }
- if (fe->ops.tuner_ops.release) {
- fe->ops.tuner_ops.release(fe);
- dvb_detach(fe->ops.tuner_ops.release);
- }
- if (fe->ops.analog_ops.release) {
- fe->ops.analog_ops.release(fe);
- dvb_detach(fe->ops.analog_ops.release);
- }
- ptr = (void*)fe->ops.release;
- if (ptr) {
- fe->ops.release(fe);
- dvb_detach(ptr);
+ if (release) {
+ release(fe);
+#ifdef CONFIG_MEDIA_ATTACH
+ dvb_detach(release);
+#endif
}
}
-#else
+
void dvb_frontend_detach(struct dvb_frontend* fe)
{
- if (fe->ops.release_sec)
- fe->ops.release_sec(fe);
- if (fe->ops.tuner_ops.release)
- fe->ops.tuner_ops.release(fe);
- if (fe->ops.analog_ops.release)
- fe->ops.analog_ops.release(fe);
- if (fe->ops.release)
- fe->ops.release(fe);
+ dvb_frontend_invoke_release(fe, fe->ops.release_sec);
+ dvb_frontend_invoke_release(fe, fe->ops.tuner_ops.release);
+ dvb_frontend_invoke_release(fe, fe->ops.analog_ops.release);
+ dvb_frontend_invoke_release(fe, fe->ops.release);
}
-#endif
EXPORT_SYMBOL(dvb_frontend_detach);