i2c: Ignore return value of i2c_del_adapter()

i2c_del_adapter() always returns 0. So all checks testing whether it will be
non zero will always evaluate to false and the conditional code is dead code.
This patch updates all callers of i2c_del_mux_adapter() to ignore the return
value and assume that it will always succeed (which it will). In a subsequent
patch the return type of i2c_del_adapter() will be made void.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Reviewed-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

2 files changed, 6 insertions, 4 deletions

diff --git a/drivers/media/pci/bt8xx/bttv-input.c b/drivers/media/pci/bt8xx/bttv-input.c
index 04207a799055..f42d26d7ed78 100644
--- a/drivers/media/pci/bt8xx/bttv-input.c
+++ b/drivers/media/pci/bt8xx/bttv-input.c
@@ -413,10 +413,10 @@ void init_bttv_i2c_ir(struct bttv *btv)
 
 int fini_bttv_i2c(struct bttv *btv)
 {
-        if (0 != btv->i2c_rc)
-                return 0;
+        if (btv->i2c_rc == 0)
+                i2c_del_adapter(&btv->c.i2c_adap);
 
-        return i2c_del_adapter(&btv->c.i2c_adap);
+        return 0;
 }
 
 int bttv_input_init(struct bttv *btv)
diff --git a/drivers/media/pci/mantis/mantis_i2c.c b/drivers/media/pci/mantis/mantis_i2c.c
index 937fb9d50213..895ddba3c0fb 100644
--- a/drivers/media/pci/mantis/mantis_i2c.c
+++ b/drivers/media/pci/mantis/mantis_i2c.c
@@ -261,6 +261,8 @@ int mantis_i2c_exit(struct mantis_pci *mantis)
         mmwrite((intmask & ~MANTIS_INT_I2CDONE), MANTIS_INT_MASK);
 
         dprintk(MANTIS_DEBUG, 1, "Removing I2C adapter");
-        return i2c_del_adapter(&mantis->adapter);
+        i2c_del_adapter(&mantis->adapter);
+
+        return 0;
 }
 EXPORT_SYMBOL_GPL(mantis_i2c_exit);