linux-kernel - [PATCH 03/12] [media] dvb-core/en50221: use dvb_remove

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Date:	Tue, 09 Aug 2016 23:32:16 +0200
From:	Max Kellermann <max.kellermann@...il.com>
To:	linux-media@...r.kernel.org, shuahkh@....samsung.com,
	mchehab@....samsung.com
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH 03/12] [media] dvb-core/en50221: use dvb_remove_device()

Commit da677fe14364 ("[media] dvb-core/en50221: use kref to manage
struct dvb_ca_private") moved the dvb_unregister_device() call to the
kref callback, but that left lots of stale device state visible to
userspace (e.g. in sysfs).  By using dvb_remove_device() and
dvb_free_device() instead of dvb_unregister_device(), we can avoid
that.

Signed-off-by: Max Kellermann <max.kellermann@...il.com>
---
 drivers/media/dvb-core/dvb_ca_en50221.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/media/dvb-core/dvb_ca_en50221.c b/drivers/media/dvb-core/dvb_ca_en50221.c
index b5b5b19..09e759c 100644
--- a/drivers/media/dvb-core/dvb_ca_en50221.c
+++ b/drivers/media/dvb-core/dvb_ca_en50221.c
@@ -166,7 +166,7 @@ static void dvb_ca_private_free(struct dvb_ca_private *ca)
 {
 	unsigned int i;
 
-	dvb_unregister_device(ca->dvbdev);
+	dvb_free_device(ca->dvbdev);
 	for (i = 0; i < ca->slot_count; i++)
 		vfree(ca->slot_info[i].rx_buffer.data);
 
@@ -1794,6 +1794,7 @@ void dvb_ca_en50221_release(struct dvb_ca_en50221 *pubca)
 	for (i = 0; i < ca->slot_count; i++) {
 		dvb_ca_en50221_slot_shutdown(ca, i);
 	}
+	dvb_remove_device(ca->dvbdev);
 	dvb_ca_private_put(ca);
 	pubca->private = NULL;
 }