linux-kernel - [PATCH 9/9] tty: synclink_gt: constify pci_device

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Message-Id: <1500804069-11043-10-git-send-email-arvind.yadav.cs@gmail.com>
Date:   Sun, 23 Jul 2017 15:31:09 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     gregkh@...uxfoundation.org, jirislaby@...il.com, jslaby@...e.com,
        gpiccoli@...ux.vnet.ibm.com
Cc:     linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: [PATCH 9/9] tty: synclink_gt: constify pci_device_id.

pci_device_id are not supposed to change at runtime. All functions
working with pci_device_id provided by <linux/pci.h> work with
const pci_device_id. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
  41180	    480	    185	  41845	   a375	drivers/tty/synclink_gt.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
  41340	    320	    185	  41845	   a375	drivers/tty/synclink_gt.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/tty/synclink_gt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
index 529c6e3..636b8ae 100644
--- a/drivers/tty/synclink_gt.c
+++ b/drivers/tty/synclink_gt.c
@@ -95,7 +95,7 @@ MODULE_LICENSE("GPL");
 #define MGSL_MAGIC 0x5401
 #define MAX_DEVICES 32
 
-static struct pci_device_id pci_table[] = {
+static const struct pci_device_id pci_table[] = {
 	{PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
 	{PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT2_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
 	{PCI_VENDOR_ID_MICROGATE, SYNCLINK_GT4_DEVICE_ID, PCI_ANY_ID, PCI_ANY_ID,},
-- 
2.7.4