diff options
Diffstat (limited to 'drivers/media/video/pwc/pwc-dec23.c')
| -rw-r--r-- | drivers/media/video/pwc/pwc-dec23.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/media/video/pwc/pwc-dec23.c b/drivers/media/video/pwc/pwc-dec23.c index 06a4e87..740bf6b 100644 --- a/drivers/media/video/pwc/pwc-dec23.c +++ b/drivers/media/video/pwc/pwc-dec23.c @@ -315,6 +315,8 @@ int pwc_dec23_init(struct pwc_device *pwc, int type, unsigned char *cmd) } pdec = pwc->decompress_data; + mutex_init(&pdec->lock); + if (DEVICE_USE_CODEC3(type)) { flags = cmd[2] & 0x18; if (flags == 8) @@ -858,6 +860,9 @@ void pwc_dec23_decompress(const struct pwc_device *pwc, int flags) { int bandlines_left, stride, bytes_per_block; + struct pwc_dec23_private *pdec = pwc->decompress_data; + + mutex_lock(&pdec->lock); bandlines_left = pwc->image.y / 4; bytes_per_block = pwc->view.x * 4; @@ -917,4 +922,6 @@ void pwc_dec23_decompress(const struct pwc_device *pwc, } } + + mutex_unlock(&pdec->lock); } |
