From cd7d9beb09d89d62bc3c6336e4cb9a2ee3da6163 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sat, 20 Feb 2010 07:56:25 -0300 Subject: [PATCH] V4L/DVB: saa7146_vv: fix regression where v4l2_device was registered too late v4l2_device_register needs to be called before the i2c subdevs are loaded. However, it was called afterwards in the saa7146 driver. This caused an oops when loading the mxb and hexium drivers. The vv_init function is now split into two: one registers the v4l2_device, the other does the rest of the initialization. The three drivers that depend on this have been updated to call the new vv_devinit function. Thanks to Michael Hunold for reporting this. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/saa7146_fops.c | 11 ++++++----- drivers/media/video/hexium_gemini.c | 9 +++++++-- drivers/media/video/hexium_orion.c | 4 ++++ drivers/media/video/mxb.c | 4 ++++ include/media/saa7146_vv.h | 1 + 5 files changed, 22 insertions(+), 7 deletions(-) diff --git a/drivers/media/common/saa7146_fops.c b/drivers/media/common/saa7146_fops.c index 7364b9642d00..fd8e1f45be36 100644 --- a/drivers/media/common/saa7146_fops.c +++ b/drivers/media/common/saa7146_fops.c @@ -423,14 +423,15 @@ static void vv_callback(struct saa7146_dev *dev, unsigned long status) } } +int saa7146_vv_devinit(struct saa7146_dev *dev) +{ + return v4l2_device_register(&dev->pci->dev, &dev->v4l2_dev); +} +EXPORT_SYMBOL_GPL(saa7146_vv_devinit); + int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv) { struct saa7146_vv *vv; - int err; - - err = v4l2_device_register(&dev->pci->dev, &dev->v4l2_dev); - if (err) - return err; vv = kzalloc(sizeof(struct saa7146_vv), GFP_KERNEL); if (vv == NULL) { diff --git a/drivers/media/video/hexium_gemini.c b/drivers/media/video/hexium_gemini.c index 60d992ee2589..e620a3a92f25 100644 --- a/drivers/media/video/hexium_gemini.c +++ b/drivers/media/video/hexium_gemini.c @@ -352,9 +352,13 @@ static struct saa7146_ext_vv vv_data; static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info) { struct hexium *hexium = (struct hexium *) dev->ext_priv; + int ret; DEB_EE((".\n")); + ret = saa7146_vv_devinit(dev); + if (ret) + return ret; hexium = kzalloc(sizeof(struct hexium), GFP_KERNEL); if (NULL == hexium) { printk("hexium_gemini: not enough kernel memory in hexium_attach().\n"); @@ -400,9 +404,10 @@ static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_d vv_data.ops.vidioc_enum_input = vidioc_enum_input; vv_data.ops.vidioc_g_input = vidioc_g_input; vv_data.ops.vidioc_s_input = vidioc_s_input; - if (0 != saa7146_register_device(&hexium->video_dev, dev, "hexium gemini", VFL_TYPE_GRABBER)) { + ret = saa7146_register_device(&hexium->video_dev, dev, "hexium gemini", VFL_TYPE_GRABBER); + if (ret < 0) { printk("hexium_gemini: cannot register capture v4l2 device. skipping.\n"); - return -1; + return ret; } printk("hexium_gemini: found 'hexium gemini' frame grabber-%d.\n", hexium_num); diff --git a/drivers/media/video/hexium_orion.c b/drivers/media/video/hexium_orion.c index 938a1f8f880a..fe596a1c12a8 100644 --- a/drivers/media/video/hexium_orion.c +++ b/drivers/media/video/hexium_orion.c @@ -216,6 +216,10 @@ static int hexium_probe(struct saa7146_dev *dev) return -EFAULT; } + err = saa7146_vv_devinit(dev); + if (err) + return err; + hexium = kzalloc(sizeof(struct hexium), GFP_KERNEL); if (NULL == hexium) { printk("hexium_orion: hexium_probe: not enough kernel memory.\n"); diff --git a/drivers/media/video/mxb.c b/drivers/media/video/mxb.c index c1fc6dc776f5..823f126b89cc 100644 --- a/drivers/media/video/mxb.c +++ b/drivers/media/video/mxb.c @@ -169,7 +169,11 @@ static struct saa7146_extension extension; static int mxb_probe(struct saa7146_dev *dev) { struct mxb *mxb = NULL; + int err; + err = saa7146_vv_devinit(dev); + if (err) + return err; mxb = kzalloc(sizeof(struct mxb), GFP_KERNEL); if (mxb == NULL) { DEB_D(("not enough kernel memory.\n")); diff --git a/include/media/saa7146_vv.h b/include/media/saa7146_vv.h index 4aeff96ff7d8..b9da1f5591e7 100644 --- a/include/media/saa7146_vv.h +++ b/include/media/saa7146_vv.h @@ -188,6 +188,7 @@ void saa7146_buffer_timeout(unsigned long data); void saa7146_dma_free(struct saa7146_dev* dev,struct videobuf_queue *q, struct saa7146_buf *buf); +int saa7146_vv_devinit(struct saa7146_dev *dev); int saa7146_vv_init(struct saa7146_dev* dev, struct saa7146_ext_vv *ext_vv); int saa7146_vv_release(struct saa7146_dev* dev); -- 2.20.1