V4L/DVB (12859): go7007: semaphore -> mutex conversion

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/go7007/go7007-driver.c

@@ -27,7 +27,7 @@
 #include <linux/device.h>
 #include <linux/i2c.h>
 #include <linux/firmware.h>
-#include <linux/semaphore.h>
+#include <linux/mutex.h>
 #include <linux/uaccess.h>
 #include <asm/system.h>
 #include <linux/videodev2.h>
@@ -140,9 +140,9 @@ int go7007_boot_encoder(struct go7007 *go, int init_i2c)
 {
 	int ret;
 
-	down(&go->hw_lock);
+	mutex_lock(&go->hw_lock);
 	ret = go7007_load_encoder(go);
-	up(&go->hw_lock);
+	mutex_unlock(&go->hw_lock);
 	if (ret < 0)
 		return -1;
 	if (!init_i2c)
@@ -257,9 +257,9 @@ int go7007_register_encoder(struct go7007 *go)
 
 	printk(KERN_INFO "go7007: registering new %s\n", go->name);
 
-	down(&go->hw_lock);
+	mutex_lock(&go->hw_lock);
 	ret = go7007_init_encoder(go);
-	up(&go->hw_lock);
+	mutex_unlock(&go->hw_lock);
 	if (ret < 0)
 		return -1;
 
@@ -604,7 +604,7 @@ struct go7007 *go7007_alloc(struct go7007_board_info *board, struct device *dev)
 	go->tuner_type = -1;
 	go->channel_number = 0;
 	go->name[0] = 0;
-	init_MUTEX(&go->hw_lock);
+	mutex_init(&go->hw_lock);
 	init_waitqueue_head(&go->frame_waitq);
 	spin_lock_init(&go->spinlock);
 	go->video_dev = NULL;

drivers/staging/go7007/go7007-i2c.c

@@ -24,7 +24,7 @@
 #include <linux/time.h>
 #include <linux/device.h>
 #include <linux/i2c.h>
-#include <linux/semaphore.h>
+#include <linux/mutex.h>
 #include <linux/uaccess.h>
 #include <asm/system.h>
 
@@ -48,7 +48,7 @@
 
 /* There is only one I2C port on the TW2804 that feeds all four GO7007 VIPs
  * on the Adlink PCI-MPG24, so access is shared between all of them. */
-static DECLARE_MUTEX(adlink_mpg24_i2c_lock);
+static DEFINE_MUTEX(adlink_mpg24_i2c_lock);
 
 static int go7007_i2c_xfer(struct go7007 *go, u16 addr, int read,
 		u16 command, int flags, u8 *data)
@@ -69,11 +69,11 @@ static int go7007_i2c_xfer(struct go7007 *go, u16 addr, int read,
 			*data, command, addr);
 #endif
 
-	down(&go->hw_lock);
+	mutex_lock(&go->hw_lock);
 
 	if (go->board_id == GO7007_BOARDID_ADLINK_MPG24) {
 		/* Bridge the I2C port on this GO7007 to the shared bus */
-		down(&adlink_mpg24_i2c_lock);
+		mutex_lock(&adlink_mpg24_i2c_lock);
 		go7007_write_addr(go, 0x3c82, 0x0020);
 	}
 
@@ -134,9 +134,9 @@ static int go7007_i2c_xfer(struct go7007 *go, u16 addr, int read,
 	if (go->board_id == GO7007_BOARDID_ADLINK_MPG24) {
 		/* Isolate the I2C port on this GO7007 from the shared bus */
 		go7007_write_addr(go, 0x3c82, 0x0000);
-		up(&adlink_mpg24_i2c_lock);
+		mutex_unlock(&adlink_mpg24_i2c_lock);
 	}
-	up(&go->hw_lock);
+	mutex_unlock(&go->hw_lock);
 	return ret;
 }
 

drivers/staging/go7007/go7007-priv.h

@@ -132,7 +132,7 @@ struct go7007_buffer {
 
 struct go7007_file {
 	struct go7007 *go;
-	struct semaphore lock;
+	struct mutex lock;
 	int buf_count;
 	struct go7007_buffer *bufs;
 };
@@ -170,7 +170,7 @@ struct go7007 {
 	int ref_count;
 	enum { STATUS_INIT, STATUS_ONLINE, STATUS_SHUTDOWN } status;
 	spinlock_t spinlock;
-	struct semaphore hw_lock;
+	struct mutex hw_lock;
 	int streaming;
 	int in_use;
 	int audio_enabled;
@@ -240,7 +240,7 @@ struct go7007 {
 	unsigned short interrupt_data;
 };
 
-/* All of these must be called with the hpi_lock semaphore held! */
+/* All of these must be called with the hpi_lock mutex held! */
 #define go7007_interface_reset(go) \
 			((go)->hpi_ops->interface_reset(go))
 #define	go7007_write_interrupt(go, x, y) \

drivers/staging/go7007/go7007-usb.c

@@ -62,7 +62,7 @@ struct go7007_usb_board {
 
 struct go7007_usb {
 	struct go7007_usb_board *board;
-	struct semaphore i2c_lock;
+	struct mutex i2c_lock;
 	struct usb_device *usbdev;
 	struct urb *video_urbs[8];
 	struct urb *audio_urbs[8];
@@ -734,7 +734,7 @@ static int go7007_usb_read_interrupt(struct go7007 *go)
 static void go7007_usb_read_video_pipe_complete(struct urb *urb)
 {
 	struct go7007 *go = (struct go7007 *)urb->context;
-	int r, status = urb-> status;
+	int r, status = urb->status;
 
 	if (!go->streaming) {
 		wake_up_interruptible(&go->frame_waitq);
@@ -877,7 +877,7 @@ static int go7007_usb_i2c_master_xfer(struct i2c_adapter *adapter,
 	if (go->status == STATUS_SHUTDOWN)
 		return -1;
 
-	down(&usb->i2c_lock);
+	mutex_lock(&usb->i2c_lock);
 
 	for (i = 0; i < num; ++i) {
 		/* The hardware command is "write some bytes then read some
@@ -935,7 +935,7 @@ static int go7007_usb_i2c_master_xfer(struct i2c_adapter *adapter,
 	ret = 0;
 
 i2c_done:
-	up(&usb->i2c_lock);
+	mutex_unlock(&usb->i2c_lock);
 	return ret;
 }
 
@@ -1065,7 +1065,7 @@ static int go7007_usb_probe(struct usb_interface *intf,
 	if (board->flags & GO7007_USB_EZUSB_I2C) {
 		memcpy(&go->i2c_adapter, &go7007_usb_adap_templ,
 				sizeof(go7007_usb_adap_templ));
-		init_MUTEX(&usb->i2c_lock);
+		mutex_init(&usb->i2c_lock);
 		go->i2c_adapter.dev.parent = go->dev;
 		i2c_set_adapdata(&go->i2c_adapter, go);
 		if (i2c_add_adapter(&go->i2c_adapter) < 0) {

drivers/staging/go7007/go7007-v4l2.c

@@ -30,7 +30,7 @@
 #include <media/v4l2-common.h>
 #include <media/v4l2-ioctl.h>
 #include <linux/i2c.h>
-#include <linux/semaphore.h>
+#include <linux/mutex.h>
 #include <linux/uaccess.h>
 #include <asm/system.h>
 
@@ -75,7 +75,7 @@ static int go7007_streamoff(struct go7007 *go)
 	int retval = -EINVAL;
 	unsigned long flags;
 
-	down(&go->hw_lock);
+	mutex_lock(&go->hw_lock);
 	if (go->streaming) {
 		go->streaming = 0;
 		go7007_stream_stop(go);
@@ -85,7 +85,7 @@ static int go7007_streamoff(struct go7007 *go)
 		go7007_reset_encoder(go);
 		retval = 0;
 	}
-	up(&go->hw_lock);
+	mutex_unlock(&go->hw_lock);
 	return 0;
 }
 
@@ -101,7 +101,7 @@ static int go7007_open(struct file *file)
 		return -ENOMEM;
 	++go->ref_count;
 	gofh->go = go;
-	init_MUTEX(&gofh->lock);
+	mutex_init(&gofh->lock);
 	gofh->buf_count = 0;
 	file->private_data = gofh;
 	return 0;
@@ -705,14 +705,14 @@ static int vidioc_reqbufs(struct file *file, void *priv,
 			req->memory != V4L2_MEMORY_MMAP)
 		return -EINVAL;
 
-	down(&gofh->lock);
+	mutex_lock(&gofh->lock);
 	for (i = 0; i < gofh->buf_count; ++i)
 		if (gofh->bufs[i].mapped > 0)
 			goto unlock_and_return;
 
-	down(&go->hw_lock);
+	mutex_lock(&go->hw_lock);
 	if (go->in_use > 0 && gofh->buf_count == 0) {
-		up(&go->hw_lock);
+		mutex_unlock(&go->hw_lock);
 		goto unlock_and_return;
 	}
 
@@ -731,7 +731,7 @@ static int vidioc_reqbufs(struct file *file, void *priv,
 				     GFP_KERNEL);
 
 		if (!gofh->bufs) {
-			up(&go->hw_lock);
+			mutex_unlock(&go->hw_lock);
 			goto unlock_and_return;
 		}
 
@@ -750,8 +750,8 @@ static int vidioc_reqbufs(struct file *file, void *priv,
 	}
 
 	gofh->buf_count = count;
-	up(&go->hw_lock);
-	up(&gofh->lock);
+	mutex_unlock(&go->hw_lock);
+	mutex_unlock(&gofh->lock);
 
 	memset(req, 0, sizeof(*req));
 
@@ -762,7 +762,7 @@ static int vidioc_reqbufs(struct file *file, void *priv,
 	return 0;
 
 unlock_and_return:
-	up(&gofh->lock);
+	mutex_unlock(&gofh->lock);
 	return retval;
 }
 
@@ -778,7 +778,7 @@ static int vidioc_querybuf(struct file *file, void *priv,
 
 	index = buf->index;
 
-	down(&gofh->lock);
+	mutex_lock(&gofh->lock);
 	if (index >= gofh->buf_count)
 		goto unlock_and_return;
 
@@ -802,12 +802,12 @@ static int vidioc_querybuf(struct file *file, void *priv,
 	buf->memory = V4L2_MEMORY_MMAP;
 	buf->m.offset = index * GO7007_BUF_SIZE;
 	buf->length = GO7007_BUF_SIZE;
-	up(&gofh->lock);
+	mutex_unlock(&gofh->lock);
 
 	return 0;
 
 unlock_and_return:
-	up(&gofh->lock);
+	mutex_unlock(&gofh->lock);
 	return retval;
 }
 
@@ -824,7 +824,7 @@ static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 			buf->memory != V4L2_MEMORY_MMAP)
 		return retval;
 
-	down(&gofh->lock);
+	mutex_lock(&gofh->lock);
 	if (buf->index < 0 || buf->index >= gofh->buf_count)
 		goto unlock_and_return;
 
@@ -865,12 +865,12 @@ static int vidioc_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 	spin_lock_irqsave(&go->spinlock, flags);
 	list_add_tail(&gobuf->stream, &go->stream);
 	spin_unlock_irqrestore(&go->spinlock, flags);
-	up(&gofh->lock);
+	mutex_unlock(&gofh->lock);
 
 	return 0;
 
 unlock_and_return:
-	up(&gofh->lock);
+	mutex_unlock(&gofh->lock);
 	return retval;
 }
 
@@ -890,7 +890,7 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 	if (buf->memory != V4L2_MEMORY_MMAP)
 		return retval;
 
-	down(&gofh->lock);
+	mutex_lock(&gofh->lock);
 	if (list_empty(&go->stream))
 		goto unlock_and_return;
 	gobuf = list_entry(go->stream.next,
@@ -934,11 +934,11 @@ static int vidioc_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
 	buf->length = GO7007_BUF_SIZE;
 	buf->reserved = gobuf->modet_active;
 
-	up(&gofh->lock);
+	mutex_unlock(&gofh->lock);
 	return 0;
 
 unlock_and_return:
-	up(&gofh->lock);
+	mutex_unlock(&gofh->lock);
 	return retval;
 }
 
@@ -952,8 +952,8 @@ static int vidioc_streamon(struct file *file, void *priv,
 	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 		return -EINVAL;
 
-	down(&gofh->lock);
-	down(&go->hw_lock);
+	mutex_lock(&gofh->lock);
+	mutex_lock(&go->hw_lock);
 
 	if (!go->streaming) {
 		go->streaming = 1;
@@ -964,8 +964,8 @@ static int vidioc_streamon(struct file *file, void *priv,
 		else
 			retval = 0;
 	}
-	up(&go->hw_lock);
-	up(&gofh->lock);
+	mutex_unlock(&go->hw_lock);
+	mutex_unlock(&gofh->lock);
 
 	return retval;
 }
@@ -978,9 +978,9 @@ static int vidioc_streamoff(struct file *file, void *priv,
 
 	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
 		return -EINVAL;
-	down(&gofh->lock);
+	mutex_lock(&gofh->lock);
 	go7007_streamoff(go);
-	up(&gofh->lock);
+	mutex_unlock(&gofh->lock);
 
 	return 0;
 }
@@ -1734,18 +1734,18 @@ static int go7007_mmap(struct file *file, struct vm_area_struct *vma)
 		return -EINVAL; /* only support VM_SHARED mapping */
 	if (vma->vm_end - vma->vm_start != GO7007_BUF_SIZE)
 		return -EINVAL; /* must map exactly one full buffer */
-	down(&gofh->lock);
+	mutex_lock(&gofh->lock);
 	index = vma->vm_pgoff / GO7007_BUF_PAGES;
 	if (index >= gofh->buf_count) {
-		up(&gofh->lock);
+		mutex_unlock(&gofh->lock);
 		return -EINVAL; /* trying to map beyond requested buffers */
 	}
 	if (index * GO7007_BUF_PAGES != vma->vm_pgoff) {
-		up(&gofh->lock);
+		mutex_unlock(&gofh->lock);
 		return -EINVAL; /* offset is not aligned on buffer boundary */
 	}
 	if (gofh->bufs[index].mapped > 0) {
-		up(&gofh->lock);
+		mutex_unlock(&gofh->lock);
 		return -EBUSY;
 	}
 	gofh->bufs[index].mapped = 1;
@@ -1754,7 +1754,7 @@ static int go7007_mmap(struct file *file, struct vm_area_struct *vma)
 	vma->vm_flags |= VM_DONTEXPAND;
 	vma->vm_flags &= ~VM_IO;
 	vma->vm_private_data = &gofh->bufs[index];
-	up(&gofh->lock);
+	mutex_unlock(&gofh->lock);
 	return 0;
 }
 
@@ -1862,15 +1862,15 @@ void go7007_v4l2_remove(struct go7007 *go)
 {
 	unsigned long flags;
 
-	down(&go->hw_lock);
+	mutex_lock(&go->hw_lock);
 	if (go->streaming) {
 		go->streaming = 0;
 		go7007_stream_stop(go);
 		spin_lock_irqsave(&go->spinlock, flags);
 		abort_queued(go);
 		spin_unlock_irqrestore(&go->spinlock, flags);
 	}
-	up(&go->hw_lock);
+	mutex_unlock(&go->hw_lock);
 	if (go->video_dev)
 		video_unregister_device(go->video_dev);
 }