diff options
author | Matthias Kaehlcke <matthias.kaehlcke@gmail.com> | 2007-07-02 10:04:52 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2007-07-18 14:24:28 -0300 |
commit | b9378fdbc334d1575b492108eac822a78c0c46d9 (patch) | |
tree | 9a78a121b72309a4471dee193ceefc5cb17ce520 /drivers | |
parent | 55c0d1005a0e5f590f71f918e49bdc81362f93a6 (diff) | |
download | op-kernel-dev-b9378fdbc334d1575b492108eac822a78c0c46d9.zip op-kernel-dev-b9378fdbc334d1575b492108eac822a78c0c46d9.tar.gz |
V4L/DVB (5809): Use mutex instead of semaphore in Philips webcam driver
The Philips webcam driver uses a semaphore as mutex. Use the mutex API
instead of the (binary) semaphore.
--
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/media/video/pwc/pwc-if.c | 12 | ||||
-rw-r--r-- | drivers/media/video/pwc/pwc.h | 4 |
2 files changed, 8 insertions, 8 deletions
diff --git a/drivers/media/video/pwc/pwc-if.c b/drivers/media/video/pwc/pwc-if.c index 085332a..9c0e8d1 100644 --- a/drivers/media/video/pwc/pwc-if.c +++ b/drivers/media/video/pwc/pwc-if.c @@ -1099,7 +1099,7 @@ static int pwc_video_open(struct inode *inode, struct file *file) return -EBUSY; } - down(&pdev->modlock); + mutex_lock(&pdev->modlock); if (!pdev->usb_init) { PWC_DEBUG_OPEN("Doing first time initialization.\n"); pdev->usb_init = 1; @@ -1131,7 +1131,7 @@ static int pwc_video_open(struct inode *inode, struct file *file) if (i < 0) { PWC_DEBUG_OPEN("Failed to allocate buffers memory.\n"); pwc_free_buffers(pdev); - up(&pdev->modlock); + mutex_unlock(&pdev->modlock); return i; } @@ -1172,7 +1172,7 @@ static int pwc_video_open(struct inode *inode, struct file *file) if (i) { PWC_DEBUG_OPEN("Second attempt at set_video_mode failed.\n"); pwc_free_buffers(pdev); - up(&pdev->modlock); + mutex_unlock(&pdev->modlock); return i; } @@ -1181,7 +1181,7 @@ static int pwc_video_open(struct inode *inode, struct file *file) PWC_DEBUG_OPEN("Failed to init ISOC stuff = %d.\n", i); pwc_isoc_cleanup(pdev); pwc_free_buffers(pdev); - up(&pdev->modlock); + mutex_unlock(&pdev->modlock); return i; } @@ -1191,7 +1191,7 @@ static int pwc_video_open(struct inode *inode, struct file *file) pdev->vopen++; file->private_data = vdev; - up(&pdev->modlock); + mutex_unlock(&pdev->modlock); PWC_DEBUG_OPEN("<< video_open() returns 0.\n"); return 0; } @@ -1685,7 +1685,7 @@ static int usb_pwc_probe(struct usb_interface *intf, const struct usb_device_id pdev->angle_range.tilt_max = 2500; } - init_MUTEX(&pdev->modlock); + mutex_init(&pdev->modlock); spin_lock_init(&pdev->ptrlock); pdev->udev = udev; diff --git a/drivers/media/video/pwc/pwc.h b/drivers/media/video/pwc/pwc.h index acbb931..910a04f 100644 --- a/drivers/media/video/pwc/pwc.h +++ b/drivers/media/video/pwc/pwc.h @@ -31,7 +31,7 @@ #include <linux/wait.h> #include <linux/smp_lock.h> #include <linux/version.h> -#include <asm/semaphore.h> +#include <linux/mutex.h> #include <asm/errno.h> #include <linux/videodev.h> #include <media/v4l2-common.h> @@ -244,7 +244,7 @@ struct pwc_device int image_read_pos; /* In case we read data in pieces, keep track of were we are in the imagebuffer */ int image_used[MAX_IMAGES]; /* For MCAPTURE and SYNC */ - struct semaphore modlock; /* to prevent races in video_open(), etc */ + struct mutex modlock; /* to prevent races in video_open(), etc */ spinlock_t ptrlock; /* for manipulating the buffer pointers */ /*** motorized pan/tilt feature */ |