[media] r820t: quiet gcc warning on n_ring

drivers/media/tuners/r820t.c: In function 'r820t_imr':
 drivers/media/tuners/r820t.c:1871:8: warning: 'n_ring' may be used uninitialized in this function [-Wmaybe-uninitialized]
Mauro: This is a FALSE POSITIVE: the loop will always return a value
for n_ring, as the last test will fill it with 15, if the loop fails.

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/tuners/r820t.c b/drivers/media/tuners/r820t.c
index 36ddbf1..e6e7a06 100644 (file)
--- a/drivers/media/tuners/r820t.c
+++ b/drivers/media/tuners/r820t.c
@@ -1854,15 +1854,12 @@ static int r820t_imr(struct r820t_priv *priv, unsigned imr_mem, bool im_flag)
        else
                ring_ref = priv->cfg->xtal;
 
+       n_ring = 15;
        for (n = 0; n < 16; n++) {
                if ((16 + n) * 8 * ring_ref >= 3100000) {
                        n_ring = n;
                        break;
                }
-
-               /* n_ring not found */
-               if (n == 15)
-                       n_ring = n;
        }
 
        reg18 = r820t_read_cache_reg(priv, 0x18);