linux-kernel - [PATCH 1/3] usb: gadget: f_midi: constify snd_rawmidi

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Date:   Tue, 15 Aug 2017 10:09:52 +0200
From:   Julia Lawall <Julia.Lawall@...6.fr>
To:     Felipe Balbi <balbi@...nel.org>
Cc:     bhumirks@...il.com, kernel-janitors@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] usb: gadget: f_midi: constify snd_rawmidi_ops structures

These snd_rawmidi_ops structures are only passed as the third
argument of snd_rawmidi_set_ops.  This argument is const, so the
snd_rawmidi_ops structures can be const too.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/usb/gadget/function/f_midi.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index a5719f2..71ca86c0 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -755,13 +755,13 @@ static void f_midi_out_trigger(struct snd_rawmidi_substream *substream, int up)
 		clear_bit(substream->number, &midi->out_triggered);
 }
 
-static struct snd_rawmidi_ops gmidi_in_ops = {
+static const struct snd_rawmidi_ops gmidi_in_ops = {
 	.open = f_midi_in_open,
 	.close = f_midi_in_close,
 	.trigger = f_midi_in_trigger,
 };
 
-static struct snd_rawmidi_ops gmidi_out_ops = {
+static const struct snd_rawmidi_ops gmidi_out_ops = {
 	.open = f_midi_out_open,
 	.close = f_midi_out_close,
 	.trigger = f_midi_out_trigger