V4L/DVB (12701): saa7134: ir-kbd-i2c init data needs a persistent object

ir-kbd-i2c's ir_probe() function can be called much later (i.e. at
ir-kbd-i2c module load), than the lifetime of a struct IR_i2c_init_data
allocated off of the stack in cx18_i2c_new_ir() at registration time.
Make sure we pass a pointer to a persistent IR_i2c_init_data object at
i2c registration time.

Thanks to Brian Rogers, Dustin Mitchell, Andy Walls and Jean Delvare to
rise this question.

Before this patch, if ir-kbd-i2c were probed after SAA7134, trash data
were used.

Compile tested only, but the patch is identical to em28xx one. So, it
should work properly.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/media/video/saa7134/saa7134.h b/drivers/media/video/saa7134/saa7134.h
index ac74903a5bd4..d18bb9643856 100644
--- a/drivers/media/video/saa7134/saa7134.h
+++ b/drivers/media/video/saa7134/saa7134.h
@@ -589,6 +589,10 @@ struct saa7134_dev {
         int                        nosignal;
         unsigned int               insuspend;
 
+        /* I2C keyboard data */
+        struct i2c_board_info      info;
+        struct IR_i2c_init_data    init_data;
+
         /* SAA7134_MPEG_* */
         struct saa7134_ts          ts;
         struct saa7134_dmaqueue    ts_q;