V4L/DVB (7893): xc5000: bug-fix: allow multiple devices in a single system

The current code passes a context pointer in the xc5000_config struct.
This context pointer is used in the tuner_callback function, used to
reset the device after firmware download.

The xc5000_config struct is a static structure, whose .priv member was
being assigned before calling xc5000_attach().  If there are more than
one of the same device type installed on a single system, the last one
to assign xc5000_config.priv will "win", and all others will cease to
function properly.

This patch passes the context pointer in xc5000_attach() rather that
storing it within the static struct xc5000_config.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/media/video/cx88/cx88-dvb.c b/drivers/media/video/cx88/cx88-dvb.c
index 75e2e58349ef..d96173ff1dba 100644
--- a/drivers/media/video/cx88/cx88-dvb.c
+++ b/drivers/media/video/cx88/cx88-dvb.c
@@ -816,11 +816,10 @@ static int dvb_register(struct cx8802_dev *dev)
                         /* tuner_config.video_dev must point to
                          * i2c_adap.algo_data
                          */
-                        pinnacle_pctv_hd_800i_tuner_config.priv =
-                                                core->i2c_adap.algo_data;
                         if (!dvb_attach(xc5000_attach, dev->dvb.frontend,
                                         &core->i2c_adap,
-                                        &pinnacle_pctv_hd_800i_tuner_config))
+                                        &pinnacle_pctv_hd_800i_tuner_config,
+                                        core->i2c_adap.algo_data))
                                 goto frontend_detach;
                 }
                 break;
@@ -878,11 +877,10 @@ static int dvb_register(struct cx8802_dev *dev)
                         /* tuner_config.video_dev must point to
                          * i2c_adap.algo_data
                          */
-                        dvico_fusionhdtv7_tuner_config.priv =
-                                                core->i2c_adap.algo_data;
                         if (!dvb_attach(xc5000_attach, dev->dvb.frontend,
                                         &core->i2c_adap,
-                                        &dvico_fusionhdtv7_tuner_config))
+                                        &dvico_fusionhdtv7_tuner_config,
+                                        core->i2c_adap.algo_data))
                                 goto frontend_detach;
                 }
                 break;