diff options
Diffstat (limited to 'drivers/media/video/cpia_pp.c')
-rw-r--r-- | drivers/media/video/cpia_pp.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/media/video/cpia_pp.c b/drivers/media/video/cpia_pp.c index 41f4b8d17559..b12cec94f4cc 100644 --- a/drivers/media/video/cpia_pp.c +++ b/drivers/media/video/cpia_pp.c | |||
@@ -82,6 +82,8 @@ struct pp_cam_entry { | |||
82 | struct pardevice *pdev; | 82 | struct pardevice *pdev; |
83 | struct parport *port; | 83 | struct parport *port; |
84 | struct work_struct cb_task; | 84 | struct work_struct cb_task; |
85 | void (*cb_func)(void *cbdata); | ||
86 | void *cb_data; | ||
85 | int open_count; | 87 | int open_count; |
86 | wait_queue_head_t wq_stream; | 88 | wait_queue_head_t wq_stream; |
87 | /* image state flags */ | 89 | /* image state flags */ |
@@ -130,6 +132,20 @@ static void cpia_parport_disable_irq( struct parport *port ) { | |||
130 | #define PARPORT_CHUNK_SIZE PAGE_SIZE | 132 | #define PARPORT_CHUNK_SIZE PAGE_SIZE |
131 | 133 | ||
132 | 134 | ||
135 | static void cpia_pp_run_callback(struct work_struct *work) | ||
136 | { | ||
137 | void (*cb_func)(void *cbdata); | ||
138 | void *cb_data; | ||
139 | struct pp_cam_entry *cam; | ||
140 | |||
141 | cam = container_of(work, struct pp_cam_entry, cb_task); | ||
142 | cb_func = cam->cb_func; | ||
143 | cb_data = cam->cb_data; | ||
144 | work_release(work); | ||
145 | |||
146 | cb_func(cb_data); | ||
147 | } | ||
148 | |||
133 | /**************************************************************************** | 149 | /**************************************************************************** |
134 | * | 150 | * |
135 | * CPiA-specific low-level parport functions for nibble uploads | 151 | * CPiA-specific low-level parport functions for nibble uploads |
@@ -664,7 +680,9 @@ static int cpia_pp_registerCallback(void *privdata, void (*cb)(void *cbdata), vo | |||
664 | int retval = 0; | 680 | int retval = 0; |
665 | 681 | ||
666 | if(cam->port->irq != PARPORT_IRQ_NONE) { | 682 | if(cam->port->irq != PARPORT_IRQ_NONE) { |
667 | INIT_WORK(&cam->cb_task, cb, cbdata); | 683 | cam->cb_func = cb; |
684 | cam->cb_data = cbdata; | ||
685 | INIT_WORK_NAR(&cam->cb_task, cpia_pp_run_callback); | ||
668 | } else { | 686 | } else { |
669 | retval = -1; | 687 | retval = -1; |
670 | } | 688 | } |