From: Hans Verkuil Date: Sat, 18 Dec 2010 14:06:09 +0000 (-0300) Subject: [media] usbvision: convert to unlocked_ioctl X-Git-Tag: firefly_0821_release~7613^2~3116^2~36 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c627b9d1f580f26fe99a8045d37a57f91e9aef66;p=firefly-linux-kernel-4.4.55.git [media] usbvision: convert to unlocked_ioctl Convert driver to use core-assisted locking. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/video/usbvision/usbvision-core.c b/drivers/media/video/usbvision/usbvision-core.c index b9dd74fde212..de58aa7d9e1d 100644 --- a/drivers/media/video/usbvision/usbvision-core.c +++ b/drivers/media/video/usbvision/usbvision-core.c @@ -2291,10 +2291,8 @@ static void call_usbvision_power_off(struct work_struct *work) struct usb_usbvision *usbvision = container_of(work, struct usb_usbvision, powerOffWork); PDEBUG(DBG_FUNC, ""); - if(mutex_lock_interruptible(&usbvision->lock)) { + if (mutex_lock_interruptible(&usbvision->v4l2_lock)) return; - } - if(usbvision->user == 0) { usbvision_i2c_unregister(usbvision); @@ -2302,7 +2300,7 @@ static void call_usbvision_power_off(struct work_struct *work) usbvision_power_off(usbvision); usbvision->initialized = 0; } - mutex_unlock(&usbvision->lock); + mutex_unlock(&usbvision->v4l2_lock); } static void usbvision_powerOffTimer(unsigned long data) diff --git a/drivers/media/video/usbvision/usbvision-video.c b/drivers/media/video/usbvision/usbvision-video.c index 20da6ea2cdf0..a5709a576772 100644 --- a/drivers/media/video/usbvision/usbvision-video.c +++ b/drivers/media/video/usbvision/usbvision-video.c @@ -356,7 +356,6 @@ static int usbvision_v4l2_open(struct file *file) PDEBUG(DBG_IO, "open"); - mutex_lock(&usbvision->lock); usbvision_reset_powerOffTimer(usbvision); if (usbvision->user) @@ -412,7 +411,6 @@ static int usbvision_v4l2_open(struct file *file) usbvision_empty_framequeues(usbvision); PDEBUG(DBG_IO, "success"); - mutex_unlock(&usbvision->lock); return errCode; } @@ -429,7 +427,6 @@ static int usbvision_v4l2_close(struct file *file) struct usb_usbvision *usbvision = video_drvdata(file); PDEBUG(DBG_IO, "close"); - mutex_lock(&usbvision->lock); usbvision_audio_off(usbvision); usbvision_restart_isoc(usbvision); @@ -449,8 +446,6 @@ static int usbvision_v4l2_close(struct file *file) usbvision->initialized = 0; } - mutex_unlock(&usbvision->lock); - if (usbvision->remove_pending) { printk(KERN_INFO "%s: Final disconnect\n", __func__); usbvision_release(usbvision); @@ -597,13 +592,11 @@ static int vidioc_s_input (struct file *file, void *priv, unsigned int input) if (input >= usbvision->video_inputs) return -EINVAL; - mutex_lock(&usbvision->lock); usbvision_muxsel(usbvision, input); usbvision_set_input(usbvision); usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight); - mutex_unlock(&usbvision->lock); return 0; } @@ -613,9 +606,7 @@ static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id) usbvision->tvnormId=*id; - mutex_lock(&usbvision->lock); call_all(usbvision, core, s_std, usbvision->tvnormId); - mutex_unlock(&usbvision->lock); /* propagate the change to the decoder */ usbvision_muxsel(usbvision, usbvision->ctl_input); @@ -977,9 +968,7 @@ static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, usbvision->curFrame = NULL; /* by now we are committed to the new data... */ - mutex_lock(&usbvision->lock); usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height); - mutex_unlock(&usbvision->lock); return 0; } @@ -1100,16 +1089,12 @@ static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) PDEBUG(DBG_MMAP, "mmap"); - mutex_lock(&usbvision->lock); - if (!USBVISION_IS_OPERATIONAL(usbvision)) { - mutex_unlock(&usbvision->lock); return -EFAULT; } if (!(vma->vm_flags & VM_WRITE) || size != PAGE_ALIGN(usbvision->max_frame_size)) { - mutex_unlock(&usbvision->lock); return -EINVAL; } @@ -1121,7 +1106,6 @@ static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) if (i == usbvision->num_frames) { PDEBUG(DBG_MMAP, "mmap: user supplied mapping address is out of range"); - mutex_unlock(&usbvision->lock); return -EINVAL; } @@ -1134,7 +1118,6 @@ static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) if (vm_insert_page(vma, start, vmalloc_to_page(pos))) { PDEBUG(DBG_MMAP, "mmap: vm_insert_page failed"); - mutex_unlock(&usbvision->lock); return -EAGAIN; } start += PAGE_SIZE; @@ -1142,7 +1125,6 @@ static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) size -= PAGE_SIZE; } - mutex_unlock(&usbvision->lock); return 0; } @@ -1158,8 +1140,6 @@ static int usbvision_radio_open(struct file *file) PDEBUG(DBG_IO, "%s:", __func__); - mutex_lock(&usbvision->lock); - if (usbvision->user) { dev_err(&usbvision->rdev->dev, "%s: Someone tried to open an already opened USBVision Radio!\n", @@ -1198,7 +1178,6 @@ static int usbvision_radio_open(struct file *file) } } out: - mutex_unlock(&usbvision->lock); return errCode; } @@ -1210,8 +1189,6 @@ static int usbvision_radio_close(struct file *file) PDEBUG(DBG_IO, ""); - mutex_lock(&usbvision->lock); - /* Set packet size to 0 */ usbvision->ifaceAlt=0; errCode = usb_set_interface(usbvision->dev, usbvision->iface, @@ -1226,8 +1203,6 @@ static int usbvision_radio_close(struct file *file) usbvision->initialized = 0; } - mutex_unlock(&usbvision->lock); - if (usbvision->remove_pending) { printk(KERN_INFO "%s: Final disconnect\n", __func__); usbvision_release(usbvision); @@ -1248,7 +1223,7 @@ static const struct v4l2_file_operations usbvision_fops = { .release = usbvision_v4l2_close, .read = usbvision_v4l2_read, .mmap = usbvision_v4l2_mmap, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, /* .poll = video_poll, */ }; @@ -1298,7 +1273,7 @@ static const struct v4l2_file_operations usbvision_radio_fops = { .owner = THIS_MODULE, .open = usbvision_radio_open, .release = usbvision_radio_close, - .ioctl = video_ioctl2, + .unlocked_ioctl = video_ioctl2, }; static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = { @@ -1346,6 +1321,7 @@ static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision, return NULL; } *vdev = *vdev_template; + vdev->lock = &usbvision->v4l2_lock; vdev->v4l2_dev = &usbvision->v4l2_dev; snprintf(vdev->name, sizeof(vdev->name), "%s", name); video_set_drvdata(vdev, usbvision); @@ -1448,7 +1424,7 @@ static struct usb_usbvision *usbvision_alloc(struct usb_device *dev, if (v4l2_device_register(&intf->dev, &usbvision->v4l2_dev)) goto err_free; - mutex_init(&usbvision->lock); /* available */ + mutex_init(&usbvision->v4l2_lock); // prepare control urb for control messages during interrupts usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); @@ -1478,14 +1454,10 @@ static void usbvision_release(struct usb_usbvision *usbvision) { PDEBUG(DBG_PROBE, ""); - mutex_lock(&usbvision->lock); - usbvision_reset_powerOffTimer(usbvision); usbvision->initialized = 0; - mutex_unlock(&usbvision->lock); - usbvision_remove_sysfs(usbvision->vdev); usbvision_unregister_video(usbvision); @@ -1598,8 +1570,6 @@ static int __devinit usbvision_probe(struct usb_interface *intf, } PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType); - mutex_lock(&usbvision->lock); - /* compute alternate max packet sizes */ uif = dev->actconfig->interface[0]; @@ -1609,7 +1579,6 @@ static int __devinit usbvision_probe(struct usb_interface *intf, usbvision->num_alt,GFP_KERNEL); if (usbvision->alt_max_pkt_size == NULL) { dev_err(&intf->dev, "usbvision: out of memory!\n"); - mutex_unlock(&usbvision->lock); return -ENOMEM; } @@ -1641,7 +1610,6 @@ static int __devinit usbvision_probe(struct usb_interface *intf, usbvision->streaming = Stream_Off; usbvision_configure_video(usbvision); usbvision_register_video(usbvision); - mutex_unlock(&usbvision->lock); usbvision_create_sysfs(usbvision->vdev); @@ -1669,7 +1637,7 @@ static void __devexit usbvision_disconnect(struct usb_interface *intf) return; } - mutex_lock(&usbvision->lock); + mutex_lock(&usbvision->v4l2_lock); // At this time we ask to cancel outstanding URBs usbvision_stop_isoc(usbvision); @@ -1685,7 +1653,7 @@ static void __devexit usbvision_disconnect(struct usb_interface *intf) usb_put_dev(usbvision->dev); usbvision->dev = NULL; // USB device is no more - mutex_unlock(&usbvision->lock); + mutex_unlock(&usbvision->v4l2_lock); if (usbvision->user) { printk(KERN_INFO "%s: In use, disconnect pending\n", diff --git a/drivers/media/video/usbvision/usbvision.h b/drivers/media/video/usbvision/usbvision.h index cc4e96c8cd6c..2271ede78ddf 100644 --- a/drivers/media/video/usbvision/usbvision.h +++ b/drivers/media/video/usbvision/usbvision.h @@ -391,7 +391,7 @@ struct usb_usbvision { unsigned char iface; /* Video interface number */ unsigned char ifaceAlt; /* Alt settings */ unsigned char Vin_Reg2_Preset; - struct mutex lock; + struct mutex v4l2_lock; struct timer_list powerOffTimer; struct work_struct powerOffWork; int power; /* is the device powered on? */