b43: mark some vars __maybe_unused in b43_nphy_pmu_spur_avoid

Avoids this warning when CONFIG_B43_BCMA is not set:

  CC [M]  drivers/net/wireless/b43/phy_n.o
drivers/net/wireless/b43/phy_n.c: In function ‘b43_nphy_pmu_spur_avoid’:
drivers/net/wireless/b43/phy_n.c:4052:6: warning: unused variable ‘pmu_ctl’
drivers/net/wireless/b43/phy_n.c:4051:22: warning: unused variable ‘cc’

Signed-off-by: John W. Linville <linville@tuxdriver.com>

diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c
index c8fa2cd97e6464d53f5bf44d4684db7daf11db32..f2435e78b37c382162a257c5417a03cd5f6ba5f1 100644 (file)
--- a/drivers/net/wireless/b43/phy_n.c
+++ b/drivers/net/wireless/b43/phy_n.c
@@ -4048,8 +4048,8 @@ int b43_phy_initn(struct b43_wldev *dev)
 /* http://bcm-v4.sipsolutions.net/802.11/PmuSpurAvoid */
 static void b43_nphy_pmu_spur_avoid(struct b43_wldev *dev, bool avoid)
 {
-       struct bcma_drv_cc *cc;
-       u32 pmu_ctl;
+       struct bcma_drv_cc __maybe_unused *cc;
+       u32 __maybe_unused pmu_ctl;
 
        switch (dev->dev->bus_type) {
 #ifdef CONFIG_B43_BCMA