DOT11_MIN_BEACON_PERIOD and DOT11_MAX_BEACON_PERIOD are
superfluous. The only invalid beacon period is 0. Comparing
a 16 bit quantity to 0xffff also causes a compile warning:

drivers/net/wireless/brcm80211/brcmsmac/main.c:5560 brcms_c_set_beacon_period()
 warn: impossible condition '(period > 65535) => (0-65535 > 65535)'

Observed from smatch analysis.

Cc: Brett Rudley <brud...@broadcom.com>
Cc: Arend van Spriel <ar...@broadcom.com>
Cc: "Franky (Zhenhui) Lin" <fran...@broadcom.com>
Cc: Hante Meuleman <meule...@broadcom.com>
Cc: "John W. Linville" <linvi...@tuxdriver.com>
Cc: Pieter-Paul Giesberts <piete...@broadcom.com>
Cc: Seth Forshee <seth.fors...@canonical.com>
Cc: Hauke Mehrtens <ha...@hauke-m.de>
Cc: linux-wirel...@vger.kernel.org
Cc: brcm80211-dev-l...@broadcom.com
Cc: net...@vger.kernel.org
Signed-off-by: Tim Gardner <tim.gard...@canonical.com>
---
 drivers/net/wireless/brcm80211/brcmsmac/main.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/main.c 
b/drivers/net/wireless/brcm80211/brcmsmac/main.c
index c26992a..080b54d 100644
--- a/drivers/net/wireless/brcm80211/brcmsmac/main.c
+++ b/drivers/net/wireless/brcm80211/brcmsmac/main.c
@@ -101,8 +101,6 @@
 #define DOT11_RTS_LEN                  16
 #define DOT11_CTS_LEN                  10
 #define DOT11_BA_BITMAP_LEN            128
-#define DOT11_MIN_BEACON_PERIOD                1
-#define DOT11_MAX_BEACON_PERIOD                0xFFFF
 #define DOT11_MAXNUMFRAGS              16
 #define DOT11_MAX_FRAG_LEN             2346
 
@@ -5555,8 +5553,7 @@ int brcms_c_set_rateset(struct brcms_c_info *wlc, struct 
brcm_rateset *rs)
 
 int brcms_c_set_beacon_period(struct brcms_c_info *wlc, u16 period)
 {
-       if (period < DOT11_MIN_BEACON_PERIOD ||
-           period > DOT11_MAX_BEACON_PERIOD)
+       if (period == 0)
                return -EINVAL;
 
        wlc->default_bss->beacon_period = period;
-- 
1.7.9.5

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