V4L/DVB (5922): ivtv, cx25840: postpone fw load until first use

The firmware is now loaded when the driver is actually used for the first
time. This allows the driver to be compiled in-kernel instead of as a module.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/media/video/ivtv/ivtv-fileops.c b/drivers/media/video/ivtv/ivtv-fileops.c
index 66ea3cbc369c..498860841644 100644
--- a/drivers/media/video/ivtv/ivtv-fileops.c
+++ b/drivers/media/video/ivtv/ivtv-fileops.c
@@ -850,6 +850,15 @@ int ivtv_v4l2_open(struct inode *inode, struct file *filp)
                 return -ENXIO;
         }
 
+        if (!test_and_set_bit(IVTV_F_I_INITED, &itv->i_flags))
+                if (ivtv_init_on_first_open(itv))
+                        set_bit(IVTV_F_I_FAILED, &itv->i_flags);
+
+        if (test_bit(IVTV_F_I_FAILED, &itv->i_flags)) {
+                printk(KERN_WARNING "ivtv:  failed to initialize on minor %d\n", minor);
+                return -ENXIO;
+        }
+
         if (y == IVTV_DEC_STREAM_TYPE_MPG &&
                 test_bit(IVTV_F_S_CLAIMED, &itv->streams[IVTV_DEC_STREAM_TYPE_YUV].s_flags))
                 return -EBUSY;