linux-kernel - [PATCH 1/4] misc: rtsx_usb: Constify struct usb_device

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Message-Id: <20200610224704.27082-2-rikard.falkeborn@gmail.com>
Date:   Thu, 11 Jun 2020 00:47:01 +0200
From:   Rikard Falkeborn <rikard.falkeborn@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     arnd@...db.de, gregkh@...uxfoundation.org,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Subject: [PATCH 1/4] misc: rtsx_usb: Constify struct usb_device_id

rtsx_usb_usb_ids is never modified and can therefore be made const to
allow the compiler to put it in read-only memory.

Before:
   text    data     bss     dec     hex filename
  21513    4160     128   25801    64c9 drivers/misc/cardreader/rtsx_usb.o

After:
   text    data     bss     dec     hex filename
  21673    4000     128   25801    64c9 drivers/misc/cardreader/rtsx_usb.o

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@...il.com>
---
 drivers/misc/cardreader/rtsx_usb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/cardreader/rtsx_usb.c b/drivers/misc/cardreader/rtsx_usb.c
index a328cab11014..59eda55d92a3 100644
--- a/drivers/misc/cardreader/rtsx_usb.c
+++ b/drivers/misc/cardreader/rtsx_usb.c
@@ -759,7 +759,7 @@ static int rtsx_usb_post_reset(struct usb_interface *intf)
 	return 0;
 }
 
-static struct usb_device_id rtsx_usb_usb_ids[] = {
+static const struct usb_device_id rtsx_usb_usb_ids[] = {
 	{ USB_DEVICE(0x0BDA, 0x0129) },
 	{ USB_DEVICE(0x0BDA, 0x0139) },
 	{ USB_DEVICE(0x0BDA, 0x0140) },
-- 
2.27.0