4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Matthias Kaehlcke <[email protected]>

commit fb239c1209bb0f0b4830cc72507cc2f2d63fadbd upstream.

In _rtl92c_get_txpower_writeval_by_regulatory() the variable writeVal
is assigned to itself in an if ... else statement, apparently only to
document that the branch condition is handled and that a previously read
value should be returned unmodified. The self-assignment causes clang to
raise the following warning:

drivers/net/wireless/realtek/rtlwifi/rtl8192cu/rf.c:304:13:
  error: explicitly assigning value of variable of type 'u32'
    (aka 'unsigned int') to itself [-Werror,-Wself-assign]
  writeVal = writeVal;

Delete the branch with the self-assignment.

Signed-off-by: Matthias Kaehlcke <[email protected]>
Acked-by: Larry Finger <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 drivers/net/wireless/realtek/rtlwifi/rtl8192cu/rf.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/rf.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/rf.c
@@ -304,9 +304,6 @@ static void _rtl92c_get_txpower_writeval
                        writeVal = 0x00000000;
                if (rtlpriv->dm.dynamic_txhighpower_lvl == TXHIGHPWRLEVEL_BT1)
                        writeVal = writeVal - 0x06060606;
-               else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
-                        TXHIGHPWRLEVEL_BT2)
-                       writeVal = writeVal;
                *(p_outwriteval + rf) = writeVal;
        }
 }


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