tty: serial: pci: 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
  12626	  18128	      0	  30754	   7822 tty/serial/8250/8250_pci.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
  23986	   6768	      0	  30754	   7822 tty/serial/8250/8250_pci.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 00e51a0643884a0ef8179b68020ae63110333215..553823c12c2fb395e674dc06243db05718791e5e 100644 (file)
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -3723,7 +3723,7 @@ static int pciserial_resume_one(struct device *dev)
 static SIMPLE_DEV_PM_OPS(pciserial_pm_ops, pciserial_suspend_one,
                         pciserial_resume_one);
 
-static struct pci_device_id serial_pci_tbl[] = {
+static const struct pci_device_id serial_pci_tbl[] = {
        /* Advantech use PCI_DEVICE_ID_ADVANTECH_PCI3620 (0x3620) as 'PCI_SUBVENDOR_ID' */
        {       PCI_VENDOR_ID_ADVANTECH, PCI_DEVICE_ID_ADVANTECH_PCI3620,
                PCI_DEVICE_ID_ADVANTECH_PCI3620, 0x0001, 0, 0,