• Arnd Bergmann's avatar
    [media] gspca: avoid unused variable warnings · d7e92e15
    Arnd Bergmann authored
    When CONFIG_INPUT is disabled, multiple gspca backend drivers
    print compile-time warnings about unused variables:
    
    media/usb/gspca/cpia1.c: In function 'sd_stopN':
    media/usb/gspca/cpia1.c:1627:13: error: unused variable 'sd' [-Werror=unused-variable]
    media/usb/gspca/konica.c: In function 'sd_stopN':
    media/usb/gspca/konica.c:246:13: error: unused variable 'sd' [-Werror=unused-variable]
    
    This annotates the variables as __maybe_unused, to let the compiler
    know that they are declared intentionally.
    
    Fixes: ee186fd9 ("[media] gscpa_t613: Add support for the camera button")
    Fixes: c2f644ae ("[media] gspca_cpia1: Add support for button")
    Fixes: b517af72 ("V4L/DVB: gspca_konica: New gspca subdriver for konica chipset using cams")
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
    Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@s-opensource.com>
    d7e92e15
t613.c 27.2 KB