diff options
author | David S. Miller <davem@davemloft.net> | 2010-12-27 09:37:05 +0300 |
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committer | David S. Miller <davem@davemloft.net> | 2010-12-27 09:37:05 +0300 |
commit | 17f7f4d9fcce8f1b75b5f735569309dee7665968 (patch) | |
tree | 14d7e49ca0053a0fcab3c33b5023bf3f90c5c08a /drivers/media/video/usbvideo/vicam.c | |
parent | 041110a439e21cd40709ead4ffbfa8034619ad77 (diff) | |
parent | d7c1255a3a21e98bdc64df8ccf005a174d7e6289 (diff) | |
download | linux-17f7f4d9fcce8f1b75b5f735569309dee7665968.tar.xz |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
net/ipv4/fib_frontend.c
Diffstat (limited to 'drivers/media/video/usbvideo/vicam.c')
-rw-r--r-- | drivers/media/video/usbvideo/vicam.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/drivers/media/video/usbvideo/vicam.c b/drivers/media/video/usbvideo/vicam.c index 5d6fd01f918a..dc17cce2fbb6 100644 --- a/drivers/media/video/usbvideo/vicam.c +++ b/drivers/media/video/usbvideo/vicam.c @@ -43,7 +43,6 @@ #include <linux/vmalloc.h> #include <linux/mm.h> #include <linux/slab.h> -#include <linux/smp_lock.h> #include <linux/mutex.h> #include <linux/firmware.h> #include <linux/ihex.h> @@ -483,29 +482,28 @@ vicam_open(struct file *file) return -EINVAL; } - /* the videodev_lock held above us protects us from - * simultaneous opens...for now. we probably shouldn't - * rely on this fact forever. + /* cam_lock/open_count protects us from simultaneous opens + * ... for now. we probably shouldn't rely on this fact forever. */ - lock_kernel(); + mutex_lock(&cam->cam_lock); if (cam->open_count > 0) { printk(KERN_INFO "vicam_open called on already opened camera"); - unlock_kernel(); + mutex_unlock(&cam->cam_lock); return -EBUSY; } cam->raw_image = kmalloc(VICAM_MAX_READ_SIZE, GFP_KERNEL); if (!cam->raw_image) { - unlock_kernel(); + mutex_unlock(&cam->cam_lock); return -ENOMEM; } cam->framebuf = rvmalloc(VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); if (!cam->framebuf) { kfree(cam->raw_image); - unlock_kernel(); + mutex_unlock(&cam->cam_lock); return -ENOMEM; } @@ -513,10 +511,17 @@ vicam_open(struct file *file) if (!cam->cntrlbuf) { kfree(cam->raw_image); rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES); - unlock_kernel(); + mutex_unlock(&cam->cam_lock); return -ENOMEM; } + cam->needsDummyRead = 1; + cam->open_count++; + + file->private_data = cam; + mutex_unlock(&cam->cam_lock); + + // First upload firmware, then turn the camera on if (!cam->is_initialized) { @@ -527,12 +532,6 @@ vicam_open(struct file *file) set_camera_power(cam, 1); - cam->needsDummyRead = 1; - cam->open_count++; - - file->private_data = cam; - unlock_kernel(); - return 0; } |