linux-kernel - [PATCH 1/2] media: dvb-core add new flag exit flag value for resume

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Date:	Thu, 24 Jul 2014 10:02:14 -0600
From:	Shuah Khan <shuah.kh@...sung.com>
To:	m.chehab@...sung.com, olebowle@....com, dheitmueller@...nellabs.com
Cc:	Shuah Khan <shuah.kh@...sung.com>, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] media: dvb-core add new flag exit flag value for resume

Some fe drivers will have to do additional initialization
in their fe ops.init interfaces when called during resume.
Without the additional initialization, fe and tuner driver
resume fails. A new fe exit flag value DVB_FE_DEVICE_RESUME
is necessary to detect resume case. This patch adds a new
define and changes dvb_frontend_resume() to set it prior to
calling fe init and tuner init calls and resets it back to
DVB_FE_NO_EXIT once fe and tuner init is done.

Signed-off-by: Shuah Khan <shuah.kh@...sung.com>
---
 drivers/media/dvb-core/dvb_frontend.c |    2 ++
 drivers/media/dvb-core/dvb_frontend.h |    1 +
 2 files changed, 3 insertions(+)

diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c
index c833220..7c7f35c 100644
--- a/drivers/media/dvb-core/dvb_frontend.c
+++ b/drivers/media/dvb-core/dvb_frontend.c
@@ -2568,12 +2568,14 @@ int dvb_frontend_resume(struct dvb_frontend *fe)
 	dev_dbg(fe->dvb->device, "%s: adap=%d fe=%d\n", __func__, fe->dvb->num,
 			fe->id);
 
+	fe->exit = DVB_FE_DEVICE_RESUME;
 	if (fe->ops.init)
 		ret = fe->ops.init(fe);
 
 	if (fe->ops.tuner_ops.init)
 		ret = fe->ops.tuner_ops.init(fe);
 
+	fe->exit = DVB_FE_NO_EXIT;
 	fepriv->state = FESTATE_RETUNE;
 	dvb_frontend_wakeup(fe);
 
diff --git a/drivers/media/dvb-core/dvb_frontend.h b/drivers/media/dvb-core/dvb_frontend.h
index 625a340..d398de4 100644
--- a/drivers/media/dvb-core/dvb_frontend.h
+++ b/drivers/media/dvb-core/dvb_frontend.h
@@ -408,6 +408,7 @@ struct dtv_frontend_properties {
 #define DVB_FE_NO_EXIT  0
 #define DVB_FE_NORMAL_EXIT      1
 #define DVB_FE_DEVICE_REMOVED   2
+#define DVB_FE_DEVICE_RESUME    3
 
 struct dvb_frontend {
 	struct dvb_frontend_ops ops;
-- 
1.7.10.4

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