From 822b8deab870f8edc2d8a1848f61c054a8188de6 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 6 Jan 2014 05:27:47 -0300 Subject: [PATCH] [media] em28xx: prevent registering wrong interfaces for audio-only A few devices (em2860) use a separate interface for audio only Audio Vendor Class USB. That interface should not be used by Remote Controller, Analog TV or Digital TV. Prevents initializing all non-audio extensions for the audio only interface. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/em28xx/em28xx-dvb.c | 10 ++++++++++ drivers/media/usb/em28xx/em28xx-input.c | 10 ++++++++++ drivers/media/usb/em28xx/em28xx-video.c | 10 ++++++++++ 3 files changed, 30 insertions(+) diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c index 7fa1c804c34c..5c6be66ac858 100644 --- a/drivers/media/usb/em28xx/em28xx-dvb.c +++ b/drivers/media/usb/em28xx/em28xx-dvb.c @@ -992,6 +992,11 @@ static int em28xx_dvb_init(struct em28xx *dev) int result = 0, mfe_shared = 0; struct em28xx_dvb *dvb; + if (dev->is_audio_only) { + /* Shouldn't initialize IR for this interface */ + return 0; + } + if (!dev->board.has_dvb) { /* This device does not support the extension */ return 0; @@ -1431,6 +1436,11 @@ static inline void prevent_sleep(struct dvb_frontend_ops *ops) static int em28xx_dvb_fini(struct em28xx *dev) { + if (dev->is_audio_only) { + /* Shouldn't initialize IR for this interface */ + return 0; + } + if (!dev->board.has_dvb) { /* This device does not support the extension */ return 0; diff --git a/drivers/media/usb/em28xx/em28xx-input.c b/drivers/media/usb/em28xx/em28xx-input.c index f3b629dd57ae..9a5dad96ff08 100644 --- a/drivers/media/usb/em28xx/em28xx-input.c +++ b/drivers/media/usb/em28xx/em28xx-input.c @@ -673,6 +673,11 @@ static int em28xx_ir_init(struct em28xx *dev) u64 rc_type; u16 i2c_rc_dev_addr = 0; + if (dev->is_audio_only) { + /* Shouldn't initialize IR for this interface */ + return 0; + } + if (dev->board.buttons) em28xx_init_buttons(dev); @@ -802,6 +807,11 @@ static int em28xx_ir_fini(struct em28xx *dev) { struct em28xx_IR *ir = dev->ir; + if (dev->is_audio_only) { + /* Shouldn't initialize IR for this interface */ + return 0; + } + em28xx_shutdown_buttons(dev); /* skip detach on non attached boards */ diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index 8da96f6417e5..9c4462868330 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -1877,6 +1877,11 @@ static int em28xx_v4l2_open(struct file *filp) */ static int em28xx_v4l2_fini(struct em28xx *dev) { + if (dev->is_audio_only) { + /* Shouldn't initialize IR for this interface */ + return 0; + } + if (!dev->has_video) { /* This device does not support the v4l2 extension */ return 0; @@ -2209,6 +2214,11 @@ static int em28xx_v4l2_init(struct em28xx *dev) unsigned int maxw; struct v4l2_ctrl_handler *hdl = &dev->ctrl_handler; + if (dev->is_audio_only) { + /* Shouldn't initialize IR for this interface */ + return 0; + } + if (!dev->has_video) { /* This device does not support the v4l2 extension */ return 0; -- 2.30.2