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-rw-r--r--drivers/media/video/vivi.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index bacb311b4f2..d4cf5566673 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)
{