#make
I myself got the following error
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KBUILD_NOPEDANTIC=1 make -C /lib/modules/`uname -r`/build M=`pwd`
make[1]: Entering directory `/usr/src/linux-source-2.6.39.4'

WARNING: Symbol version dump /usr/src/linux-source-2.6.39.4/Module.symvers
is missing; modules will have no dependencies and modversions.

CFG80211 API is prefered for this kernel version
Using CFG80211 API
CC [M] /home/Sharan/Tools/Driver_Za_wireless/hybrid_wl/src/wl/sys/wl_cfg80211.o
/home/Sharan/Tools/Driver_Za_wireless/hybrid_wl/src/wl/sys/wl_cfg80211.c: In function ΓÇÿwl_inform_single_bssΓÇÖ:
/home/Sharan/Tools/Driver_Za_wireless/hybrid_wl/src/wl/sys/wl_cfg80211.c:1817: error: too few arguments to function ΓÇÿieee80211_channel_to_frequencyΓÇÖ
make[2]: *** [/home/Sharan/Tools/Driver_Za_wireless/hybrid_wl/src/wl/sys/wl_cfg80211.o] Error 1
make[1]: *** [_module_/home/Sharan/Tools/Driver_Za_wireless/hybrid_wl] Error 2
make[1]: Leaving directory `/usr/src/linux-source-2.6.39.4'
make: *** [all] Error 2
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This means that we weren't able to create binaries (obviously)
The reason (most of you and myself ignored) is written in the error. The error is in 1817 line of the file wl_cfg80211.c on calling the function (ieee80211_channel_to_frequency)

So what i did is entered the file found the line 1817

It says something like this
freq = ieee80211_channel_to_frequency(notif_bss_info->channel
#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 39)
,(notif_bss_info->channel <= CH_MAX_2G_CHANNEL) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ
#endif
);

The problem here is that the #if is happening in preprocessing as you don't have two kernel versions also you don't have two types of ieee80211_channel_to_frequency functions
if the error says too few arguments that means that your ieee80211_channel_to_frequency is calling the 2 argument function which is included with the 2.6.39 kernel version

So you can fix that (not a perfect code but it will work on your computer)
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#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 39)
freq = ieee80211_channel_to_frequency(notif_bss_info->channel,(notif_bss_info->channel <= CH_MAX_2G_CHANNEL) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ);
#else
freq = ieee80211_channel_to_frequency(notif_bss_info->channel,(notif_bss_info->channel <= CH_MAX_2G_CHANNEL) ? IEEE80211_BAND_2GHZ : IEEE80211_BAND_5GHZ);
#endif
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