drivers/media/video/tvp5150.c:tvp5150_selmux() looks wrong

[Adrian Bunk <bunk@stusta.de>]

The Coverity checker spotted this very strange code introduced by commit 
c7c0b34c27bbf0671807e902fbfea6270c8f138d:

<--  snip  -->

...
static inline void tvp5150_selmux(struct i2c_client *c)
{
        int opmode=0;
        struct tvp5150 *decoder = i2c_get_clientdata(c);
        int input = 0;

        if ((decoder->route.output & TVP5150_BLACK_SCREEN) || !decoder->enable)
                input = 8;

        switch (input) {
        case TVP5150_COMPOSITE1:
                input |= 2;
                /* fall through */
        case TVP5150_COMPOSITE0:
                opmode=0x30;            /* TV Mode */
                break;
        case TVP5150_SVIDEO:
        default:
                input |= 1;
                opmode=0;               /* Auto Mode */
                break;
        }

        tvp5150_write(c, TVP5150_OP_MODE_CTL, opmode);
        tvp5150_write(c, TVP5150_VD_IN_SRC_SEL_1, input);
};
...

<--  snip  -->

What is done with "input" looks really buggy (e.g. it's either 0 or 8 
and the switch checks for 0, 1, 2).

cu
Adrian

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