hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

V4L/DVB: saa7146: fix regression of the av7110/budget-av driver 

An earlier regression fix for the mxb driver (V4L/DVB: saa7146_vv: fix
regression where v4l2_device was registered too late) caused a new
regression in the av7110 driver.

Reverted the old fix and fixed the problem in the mxb driver instead.
Tested on mxb and budget-av cards.

The real problem is that the saa7146 framework has separate probe()
and attach() driver callbacks which should be rolled into one. This
is now done for the mxb driver, but others should do the same. Lack
of hardware makes this hard to do, though. I hope to get hold of some
hexium cards and then I can try to improve the framework to prevent
this from happening again.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2010-03-24 19:09:55 -03:00 committed by Mauro Carvalho Chehab
parent d2f2d6d0a1
commit 03b1930efd
5 changed files with 13 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/media/common/saa7146_fops.c
View File

@ -423,15 +423,14 @@ 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) {

3
drivers/media/video/hexium_gemini.c
View File

@ -356,9 +356,6 @@ static int hexium_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_d
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");

4
drivers/media/video/hexium_orion.c
View File

@ -216,10 +216,6 @@ 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");

17
drivers/media/video/mxb.c
View File

@ -169,11 +169,7 @@ 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"));
@ -699,14 +695,17 @@ static struct saa7146_ext_vv vv_data;
/* this function only gets called when the probing was successful */
static int mxb_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data *info)
{
struct mxb *mxb = (struct mxb *)dev->ext_priv;
struct mxb *mxb;
DEB_EE(("dev:%p\n", dev));
/* checking for i2c-devices can be omitted here, because we
already did this in "mxb_vl42_probe" */
saa7146_vv_init(dev, &vv_data);
if (mxb_probe(dev)) {
saa7146_vv_release(dev);
return -1;
}
mxb = (struct mxb *)dev->ext_priv;
vv_data.ops.vidioc_queryctrl = vidioc_queryctrl;
vv_data.ops.vidioc_g_ctrl = vidioc_g_ctrl;
vv_data.ops.vidioc_s_ctrl = vidioc_s_ctrl;
@ -726,6 +725,7 @@ static int mxb_attach(struct saa7146_dev *dev, struct saa7146_pci_extension_data
vv_data.ops.vidioc_default = vidioc_default;
if (saa7146_register_device(&mxb->video_dev, dev, "mxb", VFL_TYPE_GRABBER)) {
ERR(("cannot register capture v4l2 device. skipping.\n"));
saa7146_vv_release(dev);
return -1;
}
@ -846,7 +846,6 @@ static struct saa7146_extension extension = {
.pci_tbl = &pci_tbl[0],
.module = THIS_MODULE,
.probe = mxb_probe,
.attach = mxb_attach,
.detach = mxb_detach,

1
include/media/saa7146_vv.h
View File

@ -188,7 +188,6 @@ 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);