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Diffstat (limited to 'drivers/media/video/vivi.c')
| -rw-r--r-- | drivers/media/video/vivi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c index bacb311b4f24..d4cf55666731 100644 --- a/drivers/media/video/vivi.c +++ b/drivers/media/video/vivi.c @@ -270,10 +270,15 @@ static void gen_line(struct sg_to_addr to_addr[],int inipos,int pages,int wmax, char *p,*s,*basep; struct page *pg; u8 chr,r,g,b,color; + unsigned long flags; + spinlock_t spinlock; + + spin_lock_init(&spinlock); /* Get first addr pointed to pixel position */ oldpg=get_addr_pos(pos,pages,to_addr); pg=pfn_to_page(sg_dma_address(to_addr[oldpg].sg) >> PAGE_SHIFT); + spin_lock_irqsave(&spinlock,flags); basep = kmap_atomic(pg, KM_BOUNCE_READ)+to_addr[oldpg].sg->offset; /* We will just duplicate the second pixel at the packet */ @@ -376,6 +381,8 @@ static void gen_line(struct sg_to_addr to_addr[],int inipos,int pages,int wmax, end: kunmap_atomic(basep, KM_BOUNCE_READ); + spin_unlock_irqrestore(&spinlock,flags); + } static void vivi_fillbuff(struct vivi_dev *dev,struct vivi_buffer *buf) { |