From 289d4d2f0746715ada41e0945116eb3d62d5f35c Mon Sep 17 00:00:00 2001 From: Matthias Kaehlcke Date: Wed, 24 Oct 2007 17:31:15 -0300 Subject: [PATCH] V4L/DVB (6400): usbvision: Convert the usbvision->lock semaphore to the mutex API Convert the usbvision->lock semaphore to the mutex API Signed-off-by: Matthias Kaehlcke Reviewed-by: Thierry MERLE Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/usbvision/usbvision-core.c | 8 +++- drivers/media/video/usbvision/usbvision-video.c | 54 ++++++++++++------------- drivers/media/video/usbvision/usbvision.h | 3 +- 3 files changed, 35 insertions(+), 30 deletions(-) diff --git a/drivers/media/video/usbvision/usbvision-core.c b/drivers/media/video/usbvision/usbvision-core.c index c7d5f9e..2038d40 100644 --- a/drivers/media/video/usbvision/usbvision-core.c +++ b/drivers/media/video/usbvision/usbvision-core.c @@ -2242,14 +2242,18 @@ static void call_usbvision_power_off(struct work_struct *work) struct usb_usbvision *usbvision = container_of(work, struct usb_usbvision, powerOffWork); PDEBUG(DBG_FUNC, ""); - down_interruptible(&usbvision->lock); + if(mutex_lock_interruptible(&usbvision->lock)) { + return; + } + + if(usbvision->user == 0) { usbvision_i2c_unregister(usbvision); usbvision_power_off(usbvision); usbvision->initialized = 0; } - up(&usbvision->lock); + mutex_unlock(&usbvision->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 36e689f..e34f3111 100644 --- a/drivers/media/video/usbvision/usbvision-video.c +++ b/drivers/media/video/usbvision/usbvision-video.c @@ -410,7 +410,7 @@ static int usbvision_v4l2_open(struct inode *inode, struct file *file) /* If so far no errors then we shall start the camera */ if (!errCode) { - down(&usbvision->lock); + mutex_lock(&usbvision->lock); if (usbvision->power == 0) { usbvision_power_on(usbvision); usbvision_i2c_register(usbvision); @@ -439,7 +439,7 @@ static int usbvision_v4l2_open(struct inode *inode, struct file *file) usbvision->initialized = 0; } } - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); } if (errCode) { @@ -467,7 +467,7 @@ static int usbvision_v4l2_close(struct inode *inode, struct file *file) (struct usb_usbvision *) video_get_drvdata(dev); PDEBUG(DBG_IO, "close"); - down(&usbvision->lock); + mutex_lock(&usbvision->lock); usbvision_audio_off(usbvision); usbvision_restart_isoc(usbvision); @@ -487,7 +487,7 @@ static int usbvision_v4l2_close(struct inode *inode, struct file *file) usbvision->initialized = 0; } - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); if (usbvision->remove_pending) { printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__); @@ -647,13 +647,13 @@ static int vidioc_s_input (struct file *file, void *priv, unsigned int input) if ((input >= usbvision->video_inputs) || (input < 0) ) return -EINVAL; - down(&usbvision->lock); + mutex_lock(&usbvision->lock); usbvision_muxsel(usbvision, input); usbvision_set_input(usbvision); usbvision_set_output(usbvision, usbvision->curwidth, usbvision->curheight); - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); return 0; } @@ -664,10 +664,10 @@ static int vidioc_s_std (struct file *file, void *priv, v4l2_std_id *id) (struct usb_usbvision *) video_get_drvdata(dev); usbvision->tvnormId=*id; - down(&usbvision->lock); + mutex_lock(&usbvision->lock); call_i2c_clients(usbvision, VIDIOC_S_STD, &usbvision->tvnormId); - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); /* propagate the change to the decoder */ usbvision_muxsel(usbvision, usbvision->ctl_input); @@ -1083,9 +1083,9 @@ static int vidioc_s_fmt_cap(struct file *file, void *priv, usbvision->curFrame = NULL; /* by now we are committed to the new data... */ - down(&usbvision->lock); + mutex_lock(&usbvision->lock); usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height); - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); return 0; } @@ -1211,16 +1211,16 @@ static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) PDEBUG(DBG_MMAP, "mmap"); - down(&usbvision->lock); + mutex_lock(&usbvision->lock); if (!USBVISION_IS_OPERATIONAL(usbvision)) { - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); return -EFAULT; } if (!(vma->vm_flags & VM_WRITE) || size != PAGE_ALIGN(usbvision->max_frame_size)) { - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); return -EINVAL; } @@ -1232,7 +1232,7 @@ 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"); - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); return -EINVAL; } @@ -1245,7 +1245,7 @@ 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"); - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); return -EAGAIN; } start += PAGE_SIZE; @@ -1253,7 +1253,7 @@ static int usbvision_v4l2_mmap(struct file *file, struct vm_area_struct *vma) size -= PAGE_SIZE; } - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); return 0; } @@ -1271,7 +1271,7 @@ static int usbvision_radio_open(struct inode *inode, struct file *file) PDEBUG(DBG_IO, "%s:", __FUNCTION__); - down(&usbvision->lock); + mutex_lock(&usbvision->lock); if (usbvision->user) { err("%s: Someone tried to open an already opened USBVision Radio!", __FUNCTION__); @@ -1307,7 +1307,7 @@ static int usbvision_radio_open(struct inode *inode, struct file *file) usbvision->initialized = 0; } } - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); return errCode; } @@ -1321,7 +1321,7 @@ static int usbvision_radio_close(struct inode *inode, struct file *file) PDEBUG(DBG_IO, ""); - down(&usbvision->lock); + mutex_lock(&usbvision->lock); /* Set packet size to 0 */ usbvision->ifaceAlt=0; @@ -1337,7 +1337,7 @@ static int usbvision_radio_close(struct inode *inode, struct file *file) usbvision->initialized = 0; } - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); if (usbvision->remove_pending) { printk(KERN_INFO "%s: Final disconnect\n", __FUNCTION__); @@ -1641,7 +1641,7 @@ static struct usb_usbvision *usbvision_alloc(struct usb_device *dev) usbvision->dev = dev; - init_MUTEX(&usbvision->lock); /* to 1 == available */ + mutex_init(&usbvision->lock); /* available */ // prepare control urb for control messages during interrupts usbvision->ctrlUrb = usb_alloc_urb(USBVISION_URB_FRAMES, GFP_KERNEL); @@ -1676,13 +1676,13 @@ static void usbvision_release(struct usb_usbvision *usbvision) { PDEBUG(DBG_PROBE, ""); - down(&usbvision->lock); + mutex_lock(&usbvision->lock); usbvision_reset_powerOffTimer(usbvision); usbvision->initialized = 0; - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); usbvision_remove_sysfs(usbvision->vdev); usbvision_unregister_video(usbvision); @@ -1796,7 +1796,7 @@ static int __devinit usbvision_probe(struct usb_interface *intf, } PDEBUG(DBG_PROBE, "bridgeType %d", usbvision->bridgeType); - down(&usbvision->lock); + mutex_lock(&usbvision->lock); /* compute alternate max packet sizes */ uif = dev->actconfig->interface[0]; @@ -1840,7 +1840,7 @@ static int __devinit usbvision_probe(struct usb_interface *intf, usbvision->streaming = Stream_Off; usbvision_register_video(usbvision); usbvision_configure_video(usbvision); - up(&usbvision->lock); + mutex_unlock(&usbvision->lock); usb_set_intfdata (intf, usbvision); @@ -1871,7 +1871,7 @@ static void __devexit usbvision_disconnect(struct usb_interface *intf) } usb_set_intfdata (intf, NULL); - down(&usbvision->lock); + mutex_lock(&usbvision->lock); // At this time we ask to cancel outstanding URBs usbvision_stop_isoc(usbvision); @@ -1885,7 +1885,7 @@ static void __devexit usbvision_disconnect(struct usb_interface *intf) usb_put_dev(usbvision->dev); usbvision->dev = NULL; // USB device is no more - up(&usbvision->lock); + mutex_unlock(&usbvision->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 c5b6c50..c32f685 100644 --- a/drivers/media/video/usbvision/usbvision.h +++ b/drivers/media/video/usbvision/usbvision.h @@ -34,6 +34,7 @@ #include #include #include +#include #include #include #include @@ -396,7 +397,7 @@ struct usb_usbvision { unsigned char iface; /* Video interface number */ unsigned char ifaceAlt; /* Alt settings */ unsigned char Vin_Reg2_Preset; - struct semaphore lock; + struct mutex lock; struct timer_list powerOffTimer; struct work_struct powerOffWork; int power; /* is the device powered on? */ -- 2.7.4