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| author | Arnd Bergmann <arnd@arndb.de> | 2016-07-04 10:21:40 -0300 |
|---|---|---|
| committer | Jiri Slaby <jslaby@suse.cz> | 2016-10-07 10:06:52 +0200 |
| commit | 4ecf557350704055cba0f3eff9bcc5ab8bd7d4df (patch) | |
| tree | 26f4b8501240fa738e5f8fede0760567582aa369 /drivers | |
| parent | e7489df4b7f8cb12522a52a28e381ac4a60a9bc5 (diff) | |
| download | lwn-4ecf557350704055cba0f3eff9bcc5ab8bd7d4df.tar.gz lwn-4ecf557350704055cba0f3eff9bcc5ab8bd7d4df.zip | |
gspca: avoid unused variable warnings
commit d7e92e15e92fc987640772bf110586898b5f15aa 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: ee186fd96a5f ("[media] gscpa_t613: Add support for the camera button")
Fixes: c2f644aeeba3 ("[media] gspca_cpia1: Add support for button")
Fixes: b517af722860 ("V4L/DVB: gspca_konica: New gspca subdriver for konica chipset using cams")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/usb/gspca/cpia1.c | 2 | ||||
| -rw-r--r-- | drivers/media/usb/gspca/konica.c | 2 | ||||
| -rw-r--r-- | drivers/media/usb/gspca/t613.c | 2 |
3 files changed, 3 insertions, 3 deletions
diff --git a/drivers/media/usb/gspca/cpia1.c b/drivers/media/usb/gspca/cpia1.c index 064b53043b15..78a4c1a9b98e 100644 --- a/drivers/media/usb/gspca/cpia1.c +++ b/drivers/media/usb/gspca/cpia1.c @@ -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); diff --git a/drivers/media/usb/gspca/konica.c b/drivers/media/usb/gspca/konica.c index 39c96bb4c985..0712b1bc90b4 100644 --- a/drivers/media/usb/gspca/konica.c +++ b/drivers/media/usb/gspca/konica.c @@ -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) diff --git a/drivers/media/usb/gspca/t613.c b/drivers/media/usb/gspca/t613.c index e2cc4e5a0ccb..bb52fc1fe598 100644 --- a/drivers/media/usb/gspca/t613.c +++ b/drivers/media/usb/gspca/t613.c @@ -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) { |