Geert Uytterhoeven [off-list ref] wrote:

Older gcc (< 4.4) doesn't like files starting with a Unicode BOM:

    drivers/net/wireless/ath/wcn36xx/testmode.c:1: error: stray ‘\357’ in program
    drivers/net/wireless/ath/wcn36xx/testmode.c:1: error: stray ‘\273’ in program
    drivers/net/wireless/ath/wcn36xx/testmode.c:1: error: stray ‘\277’ in program

Remove the BOM, the rest of the file is plain ASCII anyway.

Output of "file drivers/net/wireless/ath/wcn36xx/testmode.c" before:

    drivers/net/wireless/ath/wcn36xx/testmode.c: C source, UTF-8 Unicode (with BOM) text

and after:

    drivers/net/wireless/ath/wcn36xx/testmode.c: C source, ASCII text

Fixes: 87f825e6e246cee0 ("wcn36xx: Add support for Factory Test Mode (FTM)")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Ramon Fried <redacted>
Signed-off-by: Kalle Valo <redacted>

Patch applied to ath-current branch of ath.git, thanks.

371d5e9d99e1 wcn36xx: Remove Unicode Byte Order Mark from testcode

-- 
https://patchwork.kernel.org/patch/10451875/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches