Commit bf5482f9 authored by Arnd Bergmann's avatar Arnd Bergmann Committed by Greg Kroah-Hartman

gspca: avoid unused variable warnings

commit d7e92e15 upstream.

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>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5d6700e3
......@@ -1624,7 +1624,7 @@ static int sd_start(struct gspca_dev *gspca_dev)
static void sd_stopN(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
struct sd *sd __maybe_unused = (struct sd *) gspca_dev;
command_pause(gspca_dev);
......
......@@ -243,7 +243,7 @@ static int sd_start(struct gspca_dev *gspca_dev)
static void sd_stopN(struct gspca_dev *gspca_dev)
{
struct sd *sd = (struct sd *) gspca_dev;
struct sd *sd __maybe_unused = (struct sd *) gspca_dev;
konica_stream_off(gspca_dev);
#if IS_ENABLED(CONFIG_INPUT)
......
......@@ -837,7 +837,7 @@ static void sd_pkt_scan(struct gspca_dev *gspca_dev,
u8 *data, /* isoc packet */
int len) /* iso packet length */
{
struct sd *sd = (struct sd *) gspca_dev;
struct sd *sd __maybe_unused = (struct sd *) gspca_dev;
int pkt_type;
if (data[0] == 0x5a) {
......
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