diff options
Diffstat (limited to 'linux/drivers/media/video/em28xx/em28xx-core.c')
| -rw-r--r-- | linux/drivers/media/video/em28xx/em28xx-core.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/linux/drivers/media/video/em28xx/em28xx-core.c b/linux/drivers/media/video/em28xx/em28xx-core.c index 4bc4b4c6c..07fcfcc9b 100644 --- a/linux/drivers/media/video/em28xx/em28xx-core.c +++ b/linux/drivers/media/video/em28xx/em28xx-core.c @@ -1,5 +1,5 @@ /* - em2820-core.c - driver for Empia EM2820/2840 USB video capture devices + em2820-core.c - driver for Empia EM2800/EM2820/2840 USB video capture devices Copyright (C) 2005 Markus Rechberger <mrechberger@gmail.com> Ludovico Cavedon <cavedon@sssup.it> @@ -570,6 +570,11 @@ static inline void em2820_isoc_video_copy(struct em2820 *dev, void *fieldstart, *startwrite, *startread; int linesdone, currlinedone, offset, lencopy,remain; + if(dev->frame_size != (*f)->buf.length){ + em2820_err("frame_size %i and buf.length %i are different!!!\n",dev->frame_size,(*f)->buf.length); + return; + } + if ((*f)->fieldbytesused + len > dev->field_size) len =dev->field_size - (*f)->fieldbytesused; remain = len; @@ -788,6 +793,11 @@ int em2820_set_alternate(struct em2820 *dev) dev->alt = alt; if (dev->alt == 0) { int i; + if(dev->is_em2800){ /* always use the max packet size for em2800 based devices */ + for(i=0;i< EM2820_MAX_ALT; i++) + if(dev->alt_max_pkt_size[i]>dev->alt_max_pkt_size[dev->alt]) + dev->alt=i; + }else{ unsigned int min_pkt_size = dev->field_size / 137; /* FIXME: empiric magic number */ em2820_coredbg("minimum isoc packet size: %u", min_pkt_size); dev->alt = 7; @@ -796,6 +806,7 @@ int em2820_set_alternate(struct em2820 *dev) dev->alt = i; break; } + } } if (dev->alt != prev_alt) { |