USB: use function attribute __maybe_unused

Substitute USB instances of __attribute__ ((unused)) functions with the
newly introduced __maybe_unused.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/usb/gadget/pxa2xx_udc.h b/drivers/usb/gadget/pxa2xx_udc.h
index 773e549aff3f..6b012e06af3a 100644
--- a/drivers/usb/gadget/pxa2xx_udc.h
+++ b/drivers/usb/gadget/pxa2xx_udc.h
@@ -204,7 +204,7 @@ static const char *state_name[] = {
 #    define UDC_DEBUG DBG_NORMAL
 #endif
 
-static void __attribute__ ((__unused__))
+static void __maybe_unused
 dump_udccr(const char *label)
 {
         u32     udccr = UDCCR;
@@ -220,7 +220,7 @@ dump_udccr(const char *label)
                 (udccr & UDCCR_UDE) ? " ude" : "");
 }
 
-static void __attribute__ ((__unused__))
+static void __maybe_unused
 dump_udccs0(const char *label)
 {
         u32             udccs0 = UDCCS0;
@@ -237,7 +237,7 @@ dump_udccs0(const char *label)
                 (udccs0 & UDCCS0_OPR) ? " opr" : "");
 }
 
-static void __attribute__ ((__unused__))
+static void __maybe_unused
 dump_state(struct pxa2xx_udc *dev)
 {
         u32             tmp;